Foot blisters are among the most common dermatological conditions affecting physically active populations worldwide, with significant implications for comfort, performance, and overall wellbeing. Friction blisters result from the mechanical separation of epidermal cells, followed by fluid accumulation in the separation space due to hydrostatic pressure. These lesions develop most frequently in areas with thick, horny layers of skin that adhere firmly to underlying structures, particularly the palms of the hands and soles of the feet.
Hydrocolloid Blister Plasters vs. Standard Plasters for Foot Blisters: A Comprehensive Clinical Analysis
Table of Contents
- Introduction to Blister Management
- Study Design and Methodology
- Participant Demographics and Baseline Characteristics
- Primary Endpoint: Pain Relief Analysis
- Secondary Endpoints: Comparative Performance
- Cushioning and Protection Assessment
- Adhesion and Wear Time Evaluation
- Healing Time Analysis
- Participant Satisfaction and User Experience
- Safety and Adverse Event Profile
- Country-Specific Analysis
- Study Limitations and Methodological Considerations
- Discussion of Clinical Implications
- Wrap Up and Recommendations
- Summary
1. Introduction to Blister Management
The prevalence of friction blisters across different active populations is striking. Research indicates that up to 39% of marathon runners, over 40% of soldiers in training, and more than 50% of hikers are affected by this condition. While blisters typically remain minor skin conditions without complications, infections can occur, potentially resulting in cellulitis, sepsis, or even toxic shock syndrome. This clinical significance underscores the importance of effective blister management strategies.
In camping circles, it’s common knowledge that a well-planned trip leaves room for the unplanned, since good gear and good habits give you the freedom to enjoy what comes.
Traditional blister treatments include draining intact blisters and applying hydrocolloid dressings for roofless blisters. Blister draining has been shown to relieve discomfort but carries infection risks, whereas hydrocolloid dressings provide pain relief while allowing continuation of physical activity. Despite the prevalence of blister injuries, clinical studies on friction blister treatment remain relatively scarce, with most research focusing on military populations or athletes, and emphasizing prevention rather than treatment.
Hydrocolloid blister plasters, such as COMPEED® BLISTER, represent a specialized treatment approach. These non-invasive, non-sterile dressings consist of a hydrocolloid layer held in place by a polyurethane film and a non-touch foil, creating an ideal healing environment. Their intended use includes blister protection, immediate pain and pressure relief, cushioning, and protection against rubbing. Two clinical studies and one post-marketing study previously provided data supporting these marketing claims.
The present study was designed to generate additional real-world data to further substantiate the main claims of hydrocolloid blister plasters, with a particular focus on immediate pain relief and comparative effectiveness relative to standard plasters. This multinational investigation addresses a significant gap in the literature by examining blister treatment in diverse, real-world settings across three countries with distinct climates and populations.
2. Study Design and Methodology
2.1 Study Design Overview
This investigation was conducted as a prospective, non-randomized, parallel-group comparison of hydrocolloid blister plasters (COMPEED® BLISTER) and standard plasters in real-world settings. The study spanned from September 2018 to December 2018, with data collection occurring when participants developed blisters and continuing daily for 8 days as they used the plasters to manage their conditions.
The prospective design represents a significant methodological strength, as studies relying on retrospective reporting have been shown to produce lower blister incidence rates. By capturing consumer experience data in real time through daily online questionnaires, the study eliminated recall bias. It ensured that reported experiences accurately reflected the true effects of both specialist and standard plasters.
2.2 Comparator Selection
The comparator plaster was chosen on a country-specific basis, with the most commonly used standard plaster in each country selected for comparison. In the United Kingdom, Elastoplast served as the standard plaster comparator; in Spain, Hansaplast was used; and in Russia, Cosmos was the standard plaster of choice. This approach ensured ecological validity by comparing the hydrocolloid blister plaster against the actual products consumers would typically use in each market.
2.3 Participant Recruitment
Eligible participants at high risk of developing a foot blister within the next two weeks were recruited through multiple channels in each country. Recruitment sources included public sporting events, such as national and local running and charity sports events; sports clubs, including running and walking clubs; companies offering specialist walking or trekking holidays; pharmacies; and advertisements on Facebook groups for walkers and runners, as well as on shoe retailers’ websites.
The inclusion criteria were designed to capture a broad, representative sample of consumers at high risk for blister development. Eligible participants were male and female adults who had access to a smartphone, tablet, or home computer to complete the online questionnaire and were able and willing to provide consent for participation in the 8-day testing period.
Exclusion criteria included a history of diabetes, participation in consumer testing for blister plasters within the previous month, employment by the research company or any company manufacturing plasters or blister plasters, and current or recent employment within the previous six months by pharmaceutical companies, healthcare companies, personal care companies, market research companies, advertising companies, marketing companies, regulatory or advisory authorities, public relations companies, media companies, radio stations, television companies, or journalism organizations.
2.4 Data Collection Methods
All data were collected in community settings via an online questionnaire completed directly by consumers. The questionnaire was built in a validated system with built-in data checks to ensure all responses remained within valid limits. Participants uploaded data daily over the 8-day study period, capturing their experiences in real time as they used the plasters to manage their blisters.
2.5 Endpoint Definitions
Pain Relief: The amount of pain relief experienced immediately after application was measured on a 0-10 graphic rating scale, and again at 5, 10, and 30 minutes.
Time to Healing: Time to healing was defined as the period from initial plaster application to the time when the participant no longer needed to wear the plaster and considered the blister healed.
Cushioning and Adhesion: Ratings were assessed using a 6-point descriptive scale. Cushioning was defined as the plaster “protecting and relieving the pressure on the blister,” while adhesion was defined as “the plaster sticking to the foot”.
Wear Time: Mean and median wear times were calculated as the average or median of wear times for each plaster application across all participants.
Satisfaction: Overall satisfaction was measured on a 0-5 scale.
2.6 Statistical Analysis Populations
Three analysis populations were defined for the study:
| Population | Definition | Analysis Evaluated |
|---|---|---|
| All Subjects Screened | All participants who were screened | Disposition |
| Evaluable Population (EP) | Participants meeting the inclusion/exclusion criteria who completed at least the day one questionnaire | Sensitivity analysis |
| Modified Evaluable Population (MEP) | Participants meeting the inclusion/exclusion criteria who completed the final study questionnaire | Primary and secondary response analysis |
Table 1: Analysis populations defined for the study
Primary and secondary response analyses were performed on the Modified Evaluable Population (MEP), which comprised participants who met all inclusion and exclusion criteria and completed the final study questionnaire.
Blister plasters and the evidence behind them
Hydrocolloid blister plasters have a science-backed reputation in foot-care discussions, and the evidence is the point: the hydrocolloid dressing creates a moist healing environment that protects the blister while it repairs. The conversations around them compare the approach to standard plasters with real clarity about what each does.
The practical advice: apply the hydrocolloid plaster to a clean, dry blister early, and leave it in place for the days it needs to work — the dressing does its job under the protection. Standard plasters cover and cushion, while hydrocolloids actively support healing. For hikers and active people, the right blister care is a small piece of gear with a large effect on the trip.
3. Participant Demographics and Baseline Characteristics
3.1 Overall Population Distribution
Among the 1,698 participants initially screened, 744 (44%) completed the pre-application and post-first-application pain assessments, forming the Evaluable Population. Of these, 678 participants (40% of those screened) additionally completed the final questionnaire, constituting the Modified Evaluable Population (MEP) on which primary and secondary analyses were performed.
Of the 678 MEP participants, 369 were allocated to the hydrocolloid blister plaster group, while 309 were allocated to the standard plaster group. The distribution across countries included 270 participants from the United Kingdom, 310 from Russia, and 98 from Spain. Importantly, the difference in the number of subjects between the two treatment groups was not statistically significant (p=0.23), supporting comparability between the groups despite the non-randomized allocation.
3.2 Age and Gender Demographics
All participants were adults, representing both men (21%) and women (79%), aged 18 to over 55 years. The largest proportion of participants fell within the 26-45 year age range. While age distributions were similar across all countries, notable gender differences emerged between nations. In the UK and Russia, the participating population was predominantly female (88% and 84%, respectively), whereas in Spain, 60% of participants were male.
| Demographic Characteristic | Overall (n=678) | UK (n=270) | Russia (n=310) | Spain (n=98) |
|---|---|---|---|---|
| Age 18-25 years | 123 (18.1%) | 55 (20.4%) | 55 (17.7%) | 13 (13.3%) |
| Age 26-35 years | 205 (30.2%) | 97 (35.9%) | 83 (26.8%) | 25 (25.5%) |
| Age 36-45 years | 210 (31.0%) | 77 (28.5%) | 95 (30.6%) | 38 (38.8%) |
| Age 46-55 years | 105 (15.5%) | 31 (11.5%) | 58 (18.7%) | 16 (16.3%) |
| Over 55 years | 35 (5.2%) | 10 (3.7%) | 19 (6.1%) | 6 (6.1%) |
| Male | 141 (20.8%) | 32 (11.9%) | 50 (16.1%) | 59 (60.2%) |
| Female | 537 (79.2%) | 238 (88.1%) | 260 (83.9%) | 39 (39.8%) |
Table 2: Age and gender demographics of MEP participant population overall and by country
3.3 Comorbidity and Blister Causes
Only a small percentage of participants (4%) had pre-existing skin conditions such as psoriasis or eczema that might have affected plaster adhesion or caused reactions to the plasters. All participants experienced friction blisters from shoes, with multiple causes reported. The primary causes included wearing new shoes (30%), wearing shoes that had not been worn for a while (32%), and sporting activities (32%). A notably higher percentage of sports-related blisters was reported in Spain (68%), suggesting potential differences in cultural practices or activity patterns.
| Blister Cause | Overall (n=678) | UK (n=270) | Russia (n=310) | Spain (n=98) |
|---|---|---|---|---|
| Wearing new shoes | 203 (29.9%) | 74 (27.4%) | 117 (37.7%) | 12 (12.2%) |
| Walking in shoes not worn for a while | 215 (31.7%) | 79 (29.3%) | 126 (40.6%) | 10 (10.2%) |
| Shoes not worn for a while for a special occasion | 63 (9.3%) | 37 (13.7%) | 16 (5.2%) | 10 (10.2%) |
| Usual shoes, but the hotter weather caused rubbing | 67 (9.9%) | 27 (10.0%) | 39 (12.6%) | 1 (1.0%) |
| Sporting activities | 217 (32.0%) | 82 (30.4%) | 68 (21.9%) | 67 (68.4%) |
| Other | 28 (4.1%) | 16 (5.9%) | 9 (2.9%) | 3 (3.1%) |
Table 3: Blister causes reported by participants (multiple answers possible)
3.4 Use of Additional Remedies
Very few participants used additional blister healing remedies during the study period. These included applying antiseptic cream and popping the blister. There was no statistically significant difference in the proportion of consumers using additional remedies between the hydrocolloid blister plaster group (3.8%) and the standard plaster group (8.1%, Chi square 5.73, p=0.017). Similarly, no differences were observed between groups in country-level findings on the use of additional blister-healing remedies.
4. Primary Endpoint: Pain Relief Analysis
4.1 Primary Endpoint Definition and Statistical Hypotheses
The primary endpoint of this study was the proportion of participants who experienced pain relief, defined as a reduction of at least 1 point on the 0-10 graphic rating pain scale from the pre-application pain rating, immediately and within 5, 10, and 30 minutes of first application of COMPEED® BLISTER plaster.
The null hypothesis (H₀₁) stated that ≤50% of participants would experience immediate pain relief at each time point (immediately after application and at 5, 10, and 30 minutes after the first application). The alternative hypothesis (Hₐ₁) stated that >50% of consumers would experience immediate pain relief at each time point.
4.2 Baseline Pain Assessment
Reported pain at baseline, assessed immediately before applying the blister plaster on the 0-10 scale, where 0 represented “no pain at all” and 10 represented “the worst pain imaginable,” was moderately high in both groups. The hydrocolloid blister plaster group reported a median pain score of 7/10, while the standard plaster group reported a median of 6/10. No statistically significant differences were observed between the groups at baseline (p=0.18), and median pain scores were similar across countries (p=0.18).
4.3 Immediate Pain Relief Results
The proportion of participants using hydrocolloid blister plasters who experienced pain relief of at least 1 point on the 10-point pain scale exceeded 50% immediately after plaster application (56%). This exceeded the pre-specified cut-off of 50% with statistical significance (55.8% ± 5.1; p<0.05), confirming that the specialist plaster provided effective immediate pain relief and leading to rejection of the null hypothesis.
| Time Point | Number | Percentage | 95% CI | Statistical Significance |
|---|---|---|---|---|
| Immediately | 206 | 55.8% | 50.7 to 60.9 | p<0.05 |
| 5 minutes | 320 | 86.7% | 83.2 to 90.2 | p<0.0001 |
| 10 minutes | 340 | 92.1% | 89.3 to 94.9 | p<0.0001 |
| 30 minutes | 354 | 95.9% | 93.9 to 97.9 | p<0.0001 |
Table 4: Pain relief (≥1 point reduction on pain scale) by hydrocolloid blister plaster over the first 30 minutes
The proportion of participants experiencing pain relief continuously increased over the observation period, rising from 56% immediately after application to 87% at 5 minutes, 92% at 10 minutes, and 96% at 30 minutes post-application. Pain relief at all time points was statistically significant (p<0.05), providing strong evidence for the sustained analgesic effect of hydrocolloid blister plasters.
4.4 Country-Specific Pain Relief Patterns
The pain relief results showed consistent patterns across all three countries. More than 50% of participants in each country experienced immediate pain relief, with country-specific proportions of 52-60% immediately, 83-90% at 5 minutes, 95-97% at 10 minutes, and 95-97% at 30 minutes. The highest proportion of pain relief at each time point was observed in Russia.
4.5 Comparative Pain Relief: Hydrocolloid vs. Standard Plasters
The proportion of participants experiencing immediate pain relief within the first 30 minutes was significantly higher across all time points in the hydrocolloid blister plaster group than in the standard plaster group (p ≤ 0.021). This superiority was consistent at the country level, with significantly higher proportions of hydrocolloid blister plaster users reporting immediate pain relief within 5 minutes across all three countries.
Figure 1: Proportion of MEP subjects with pain relief
The chart would show the percentages of patients experiencing pain relief (≥ 1-point reduction on the pain scale) immediately after application of hydrocolloid blister plasters (HBP) or standard plasters (STP), at 5, 10, and 30 minutes. Pain relief was significantly higher in the HBP group than in the STP group at all time points ( p<0.05, **p<0.0001).< /em>
5. Secondary Endpoints: Comparative Performance
5.1 Analysis Methodology for Secondary Endpoints
Secondary endpoints involved comparisons between hydrocolloid blister plasters and standard plasters. The distribution of quantitative variables was assessed using the Shapiro-Wilk test, and differences between specialist and standard plasters were analyzed using either Student’s t-test for independent samples or the Mann-Whitney test, depending on the distribution characteristics.
Univariate associations between qualitative variables were assessed using Chi-square tests and/or Spearman rank-order correlations. The distribution of blister sizes between the two consumer groups was comparable, making stratification of the analysis unnecessary. Similarly, very few consumers used additional blister healing remedies during the study, so stratification for these remedies was not required.
5.2 Key Secondary Outcome Domains
The study evaluated four key domains of plaster performance: cushioning effect, adhesion properties, wear time, and time to healing. Additionally, overall participant satisfaction and safety profiles were assessed as critical outcomes for determining the comprehensive effectiveness of hydrocolloid blister plasters compared to standard plasters.
6. Cushioning and Protection Assessment
6.1 Cushioning Ratings
Ratings of blister cushioning were significantly higher for participants applying the specialist plaster than for those using standard plasters. Specifically, 73.4% of hydrocolloid blister plaster users rated the plasters as providing very good or excellent cushioning, compared to only 38.8% of standard plaster users. This difference was highly statistically significant (χ² = 108.38, p < 0.0001).
| Cushioning Rating | Hydrocolloid Blister Plaster | Standard Plaster |
|---|---|---|
| Very good or excellent | 73.4% | 38.8% |
| Lower ratings | 26.6% | 61.2% |
Table 5: Cushioning effect comparison between hydrocolloid blister plasters and standard plasters
6.2 Clinical Significance of Cushioning
Cushioning, defined as the plaster “protecting and relieving the pressure on the blister,” is a critical attribute for blister management. Effective cushioning reduces mechanical stress on the affected area, allowing participants to continue their daily activities and physical pursuits while the blister heals. The nearly two-fold difference in favorable cushioning ratings between the two plaster types demonstrates the superior mechanical protection afforded by hydrocolloid blister plasters.
Similar results were obtained at the country level, with participants in the UK, Russia, and Spain all reporting significantly better cushioning with hydrocolloid blister plasters than with standard plasters. This consistency across different countries and climates supports the generalizability of the cushioning benefit.
7. Adhesion and Wear Time Evaluation
7.1 Adhesion Ratings
Hydrocolloid blister plaster users gave significantly higher ratings for adhesion than users of standard plasters, with 89.5% of participants rating the specialist plasters as sticking to their foot very well or perfectly, compared to 67.7% for standard plasters (p<0.0001). The difference between groups was statistically significant (Chi-square 61.40, p<0.0001).
Figure 3: Patient-reported plaster adhesion
The chart would illustrate the difference in adhesion between hydrocolloid blister plasters and standard plasters, with the difference between groups being statistically significant (Chi square 61.40, p<0.0001).< /em>
7.2 Wear Time Comparison
Although both specialist and standard plasters were changed on multiple occasions throughout the study period, significant differences emerged in changing patterns. Standard plasters were changed much more frequently, with a total of 1,041 changes over the study period, compared with 765 for hydrocolloid blister plasters.
| Parameter | Hydrocolloid Blister Plaster | Standard Plaster |
|---|---|---|
| Total changes over the study period | 765 | 1,041 |
| Median wear time | 2 days | 1 day |
| Statistical significance | p<0.0001 | – |
Table 6: Wear time comparison between hydrocolloid blister plasters and standard plasters
The median wear time for hydrocolloid blister plasters was significantly longer than for standard plasters, at 2 days versus 1 day (p<0.0001). This difference in wear time has important practical implications, as less frequent plaster changes translate to reduced disruption, lower product usage, and potentially better cost-effectiveness for consumers.
7.3 Factors Contributing to Adhesion Performance
The superior adhesion of hydrocolloid blister plasters is attributed to their specialized construction, which includes a hydrocolloid layer secured by a polyurethane film. This design allows the plaster to remain in place even during physical activity, sweating, and exposure to moisture, whereas standard plasters tend to lose adhesion more quickly under similar conditions.
Consistent results were obtained at the country level in the UK, Russia, and Spain, with all national subgroups showing significantly better adhesion and longer wear time for hydrocolloid blister plasters compared to standard plasters.
8. Healing Time Analysis
8.1 Overall Healing at 8 Days
At the 8-day endpoint, no overall difference was observed in the proportion of healed blisters between specialist plasters (75%) and standard plasters (74%), nor was a statistically significant difference observed across countries. This likely reflects the natural course of blister healing, which typically follows a consistent timeline regardless of treatment modality.
Since there was an equal distribution of blister size at baseline between the hydrocolloid blister plaster and standard plaster groups, no stratification by blister size was required for this analysis.
8.2 Cox Regression Analysis of Healing Time
The time to healing was the only endpoint in the study where hydrocolloid blister plasters were not statistically significantly different from standard plasters across all countries. However, Cox regression analysis revealed important nuances when considering specific subgroups. Analysis of data from the UK and Spain showed that blisters in participants using hydrocolloid blister plasters healed significantly faster than those in subjects using standard plasters (hazard ratio 0.667, p=0.011).
| Variable | Standard Error | p Value | Hazard Ratio | 95% CI Lower | 95% CI Upper |
|---|---|---|---|---|---|
| Plaster used (HBP vs STP) | 0.159 | 0.011 | 0.667 | 0.489 | 0.910 |
| Frequency of changing | 0.073 | <0.001 | 0.608 | 0.527 | 0.701 |
Table 7: Cox regression analysis on time to healing between specialist and standard plasters (UK and Spain)
The Cox regression analysis also revealed that changing plasters less frequently was associated with faster healing (hazard ratio, 0.608; p < 0.0001). This finding is clinically significant, as it suggests that the extended wear time of hydrocolloid blister plasters may contribute to their healing advantage.
8.3 Russian Subgroup Considerations
Data from Russian participants were excluded from the Cox regression analysis because a high proportion of Russian participants removed their plasters daily as a matter of course, regardless of clinical necessity. Since faster healing was observed for participants who changed their plasters less frequently in Spain and the UK (p<0.0001) compared to Russia, it is possible that changing hydrocolloid blister plasters this frequently prevented the dressing’s advantages from playing a meaningful role in the healing process for Russian subjects.
9. Participant Satisfaction and User Experience
9.1 Overall Satisfaction Ratings
Subjects using specialist plasters gave significantly higher ratings of overall satisfaction than participants using standard plasters. An impressive 94% of participants using hydrocolloid blister plasters gave high satisfaction ratings (4 or 5 on a 0-5 scale, where 0 represented “not at all satisfied” and 5 represented “extremely satisfied”), while significantly fewer participants using standard plasters gave equally high ratings (75%; Chi square 72.93, p<0.0001).
Figure 4: Overall satisfaction ratings
The chart would show overall satisfaction scores between hydrocolloid blister plasters (HBP) and standard plasters (STP) on a scale from 0 (not satisfied) to 5 (very satisfied). The difference between groups was statistically significant (Chi square 72.93, p<0.0001).< /em>
Similar results were obtained at the country level, with significant differences across all three countries.
9.2 Purchase Intent and Recommendation Rates
Perhaps the most compelling evidence of user satisfaction came from participants’ stated intentions regarding future product use. Almost all participants using hydrocolloid blister plasters stated that they would use such plasters again (99%) or recommend them to family and friends (98%).
| Response | HBP (n=369) | STP (n=309) | Chi Square | Significance (p) |
|---|---|---|---|---|
| Would purchase this plaster again (Yes) | 365 (98.9%) | 267 (86.4%) | 41.60 | <0.0001 |
| Would recommend this plaster to family and friends (Yes) | 362 (98.1%) | 258 (83.5%) | 45.87 | <0.0001 |
Table 8: Differences in likelihood to purchase and recommend plaster between consumers using COMPEED® BLISTER (HBP) and those using standard plasters (STP)
These ratings were significantly higher than for the group of participants using standard plasters, among whom 86% stated they would purchase the product again and 84% would recommend it to family and friends. The substantial gap between the two groups in both purchase intent (98.9% vs. 86.4%) and recommendation rates (98.1% vs. 83.5%) demonstrates the strong preference for hydrocolloid blister plasters among consumers who have used both product types.
10. Safety and Adverse Event Profile
10.1 Solicited Adverse Events
The number of solicited adverse events and quality complaints reported was very low for both specialist and standard plasters, with no significant differences between the two groups. This pattern was consistent within individual countries as well.
| Solicited Adverse Event | Hydrocolloid Blister Plaster | Standard Plaster |
|---|---|---|
| Removal of skin | 1.6% | Not reported |
| Lack of healing or an increase in blister size | 0.8% | 1.6% |
| Skin irritation or rashes | Not reported | 1.0% |
Table 9: Most commonly named solicited adverse events for both plaster types
The most commonly reported adverse event for hydrocolloid blister plaster was skin removal (1.6%), followed by lack of healing or an increase in blister size (0.8%). For standard plasters, the most commonly solicited adverse event was lack of healing or an increase in blister size (1.6%), followed by skin irritation or rashes (1.0%).
10.2 Unsolicited Adverse Events
Similarly, the number of unsolicited adverse events and quality complaints was low for hydrocolloid blister plasters. Overall, more unsolicited quality complaints and adverse events were reported for standard plasters (8.1%) than for specialist plasters (5.7%).
One serious unsolicited adverse event was reported: a death from a ruptured cerebral artery aneurysm resulting in subarachnoid hemorrhage occurred in a hydrocolloid blister plaster subject in the United Kingdom. However, this event was considered unrelated to the blister treatment, occurring on the third day of treatment in a subject with a long history of migraines and high blood pressure.
10.3 Safety Wrap Up
The safety assessment demonstrated that hydrocolloid blister plasters were comparable to standard plasters in terms of safety, with very few adverse event reports for both product types. This finding is particularly important given that the intended users are adults in the general population who may use these products without medical supervision. The favorable safety profile supports the suitability of hydrocolloid blister plasters for over-the-counter use in blister management.
11. Country-Specific Analysis
11.1 United Kingdom
In the United Kingdom, 270 participants formed the MEP population, with 153 allocated to the hydrocolloid blister plaster group and 117 to the standard plaster group. The UK population was predominantly female (88%) with a broad age distribution. Blister causes were relatively evenly distributed across new shoes (27.4%), shoes not worn for a while (29.3%), and sporting activities (30.4%).
Pain relief patterns in the UK mirrored the overall results, with 52.3% experiencing immediate pain relief, rising to 85.0% at 5 minutes, 90.8% at 10 minutes, and 96.7% at 30 minutes. The UK showed the highest rate of pre-existing skin conditions, with 5.9% of participants reporting eczema.
11.2 Russia
Russia contributed the largest national cohort with 310 MEP participants, equally divided between hydrocolloid blister plaster (158) and standard plaster (152) groups. The Russian population was predominantly female (84%) with an age distribution similar to that of the UK.
A distinctive feature of the Russian cohort was the pattern of plaster changing behavior. A high proportion of Russian participants removed their plasters daily as a matter of course, which affected the analysis of healing time. Pain relief results in Russia showed the highest proportion of immediate relief (60.1%) and consistently strong results at subsequent time points.
The primary blister causes in Russia were wearing new shoes (37.7%) and walking in shoes not worn for a while (40.6%), with sporting activities accounting for only 21.9% of blisters. Interestingly, no participants in Russia reported eczema or psoriasis as comorbidities.
11.3 Spain
Spain contributed the smallest national cohort, with 98 MEP participants: 58 in the hydrocolloid blister plaster group and 40 in the standard plaster group. Spain was unique in having a predominantly male population (60%), in contrast to the female-dominated populations in the UK and Russia.
The Spanish cohort reported the highest proportion of sports-related blisters at 68.4%, substantially higher than the UK (30.4%) and Russia (21.9%). This difference may reflect cultural and recreational activity patterns specific to the Spanish population.
Pain relief patterns in Spain were consistent with overall results, with 53.4% experiencing immediate relief, rising to 82.8% at 5 minutes, 93.1% at 10 minutes, and 96.6% at 30 minutes.
12. Study Limitations and Methodological Considerations
12.1 Blinding and Randomization Limitations
The study had several methodological limitations that should be considered when interpreting the results. First, participants could not be blinded to their plaster allocation, and the allocation of specialist and standard plasters was not randomized. This lack of blinding introduces the possibility of expectation bias, where participants’ knowledge of their treatment assignment might influence their subjective ratings.
To minimize this bias, allocation was alternated between hydrocolloid blister plasters and standard plasters, and the distribution of key potential confounders, such as blister size and use of additional blister-healing remedies, was assessed.
12.2 Distribution Strategy Bias
Additional potential bias was introduced by the distribution strategies used across countries. In the UK and Spain, plasters were handed out to consumers at risk of developing blisters rather than to those who already had them. Since the distribution among customers who actually developed blisters could not be foreseen, the blister plaster group sizes were unequal, with fewer customers in the standard plaster group (369 vs. 308). While this unequal distribution might have introduced some bias, both groups were large enough to make the analysis robust.
In Russia, by contrast, customers received plasters only if a blister had already developed, thereby avoiding unequal distribution between the two plaster groups. However, this approach introduced a potential bias due to the lag phase between blister development and plaster application: more than 96% accessed their plaster within the first day. At the same time, a few participants experienced delays of up to 72 hours.
12.3 Generalizability Considerations
Despite these limitations, the study has high practical relevance due to its prospective design, broad inclusion criteria for participants, and geographic diversity. The prospective design, which captured subject experience data in real time using an app for daily data entry, ensured that the reported data accurately reflected the effects experienced and eliminated recall bias.
Most previous clinical studies on friction blisters focused on military personnel or athletes. The broad inclusion criteria in this study ensured that the results can be generalized across age groups, gender, and the level and type of activity that causes blisters.
12.4 Geographic Diversity
The study was conducted in three countries with distinct climates. Since environmental factors such as moisture and temperature have been shown to affect blister formation, selecting countries with different climates ensured the generalizability of the data across most geographic regions. The UK, Russia, and Spain represent distinct climatic conditions, and the consistency of results across these diverse environments strengthens the external validity of the findings.
13. Discussion of Clinical Implications
13.1 Primary Objective Achievement
The primary objective of this study—to validate the superiority of the specialist plaster in terms of immediate pain relief—was clearly achieved. The proportion of participants experiencing pain relief immediately after application (55.8%) statistically significantly exceeded the pre-specified 50% cut-off (p<0.05), confirming the immediate analgesic effect of hydrocolloid blister plasters.
This finding has substantial clinical relevance for individuals suffering from painful foot blisters. The immediate pain relief provided by hydrocolloid blister plasters can allow continued participation in physical activities and reduce the discomfort associated with daily ambulation, improving quality of life during the healing period.
13.2 Comprehensive Performance Superiority
The study demonstrated that hydrocolloid blister plasters consistently outperformed standard plasters across multiple performance dimensions, including pain relief, adhesion, wear time, cushioning, and time to healing. The only comparative claim that could not be fully supported by data across all countries was faster healing, which was significantly better in Spain and the UK but not in Russia. These results may have been confounded by patterns of wear time, since significantly more Russian customers changed their plasters daily even without clinical necessity, and a low changing frequency has been shown to contribute to faster healing.
13.3 Clinical Practice Implications
The results of this study have several implications for clinical practice and consumer education regarding blister management:
- First-line treatment consideration: Given the demonstrated superiority in pain relief, adhesion, cushioning, and user satisfaction, hydrocolloid blister plasters should be considered a first-line treatment option for uncomplicated foot blisters.
- Extended wear time benefits: The longer wear time of hydrocolloid blister plasters (median 2 days vs. 1 day for standard plasters) reduces the need for frequent changes, minimizing disruption to activity and potentially reducing the risk of infection associated with repeated dressing changes.
- Faster healing with appropriate use: The association between fewer plaster changes and faster healing suggests that clinicians should educate patients on the importance of allowing hydrocolloid dressings to remain in place for their full effective duration rather than changing them unnecessarily.
- Patient satisfaction as a driver of compliance: The high satisfaction rates and strong purchase intent and recommendation rates associated with hydrocolloid blister plasters suggest that patient compliance with treatment recommendations may be higher with these products than with standard plasters.
13.4 Safety Profile
The comparable safety profiles of hydrocolloid blister plasters and standard plasters, with very few adverse events in both groups, support the suitability of these products for over-the-counter use. The low rates of adverse events (1.6% for skin removal with hydrocolloid plasters; 1.6% for lack of healing with standard plasters) indicate that the general population tolerates both product types well.
14. Wrap Up and Recommendations
14.1 Summary of Key Findings
This multinational, prospective, comparative study provides robust evidence supporting the superiority of hydrocolloid blister plasters over standard plasters for treating foot blisters in real-world settings. The major outcomes of this study can be summarized as follows:
| Outcome | Finding | Statistical Significance |
|---|---|---|
| Immediate pain relief | 55.8% experienced relief immediately after application, | p<0.05 |
| Pain relief at 30 minutes | 95.9% experienced relief | p<0.0001 |
| Very good/excellent cushioning | 73.4% vs. 38.8% (HBP vs. STP) | p<0.0001 |
| Very good/perfect adhesion | 89.5% vs. 67.7% (HBP vs. STP) | p<0.0001 |
| Median wear time | 2 days vs. 1 day (HBP vs. STP) | p<0.0001 |
| Faster healing (UK & Spain) | Hazard ratio 0.667 | p=0.011 |
| High satisfaction | 94% vs. 75% (HBP vs. STP) | p<0.0001 |
| Would purchase again | 98.9% vs. 86.4% (HBP vs. STP) | p<0.0001 |
| Would recommend | 98.1% vs. 83.5% (HBP vs. STP) | p<0.0001 |
Table 10: Summary of key study outcomes comparing hydrocolloid blister plasters (HBP) to standard plasters (STP)
14.2 Clinical Recommendations
Based on the findings of this study and the available evidence from previous research, the following clinical recommendations can be made:
- For healthcare providers: Hydrocolloid blister plasters should be recommended as the preferred treatment option for uncomplicated foot blisters, given their demonstrated superiority in pain relief, cushioning, adhesion, and patient satisfaction.
- For consumers: Individuals experiencing foot blisters should consider using hydrocolloid blister plasters rather than standard adhesive plasters, as the evidence supports better outcomes across all clinically relevant endpoints.
- For product manufacturers: The consistent superiority of hydrocolloid blister plasters across diverse geographic regions and populations supports continued investment in this technology and its widespread availability in consumer markets.
14.3 Future Research Directions
While this study provides compelling evidence for the effectiveness of hydrocolloid blister plasters, several avenues for future research remain:
- Randomized controlled trials: Future studies employing randomized allocation and blinding would further strengthen the evidence base.
- Long-term outcomes: Extended follow-up periods would provide additional data on long-term healing outcomes and potential late adverse events.
- Specific population studies: Research focusing on high-risk populations, such as patients with diabetes, elderly individuals, and competitive athletes, would help clarify the role of hydrocolloid blister plasters in these groups.
- Cost-effectiveness analysis: Formal health economic evaluations would help quantify the value proposition of hydrocolloid blister plasters compared to standard plasters in terms of reduced product usage, fewer changes, and potentially faster healing.
14.4 Final Statement
The study demonstrated that blister sufferers achieved immediate pain relief with hydrocolloid blister plasters (COMPEED® BLISTER) and that this pain relief was significantly greater than that provided by standard plasters. Furthermore, hydrocolloid blister plasters demonstrated superior performance in adhesion, cushioning, wear time, and healing time. The satisfaction level of participants using hydrocolloid blister plasters was significantly higher than for those using standard plasters. Due to the prospective design, appropriate choice of population, and geographic diversity of the study locations, the results are relevant across a wide range of markets and consumer populations worldwide.
The evidence clearly supports the claim that hydrocolloid blister plasters provide a superior option for foot blister management, offering immediate pain relief, sustained effectiveness, extended wear time, and high user satisfaction, all within a favorable safety profile comparable to standard plasters.
Other Products to Help with Blisters and Other Painful Foot Problems
Amazon Basic Care Extreme Hydrocolloid Gel Blister Cushion Bandages – These hydrocolloid gel bandages are a lifesaver for my heels. They last a long time and really help with the rubbing.
SpecOps Biosciences Ultra-Thin Athletic Moleskin Roll: these moleskin pads are a real upgrade for my outdoor adventures. Keeps my feet comfy and blister-free! SpecOps moleskin on Amazon.
Hydrocolloid Bandage Roll – These hydrocolloid bandages are a must-have for anyone needing wound care or blister treatment. Highly absorbent and waterproof!
Body Glide Foot Glide Anti-Blister Balm: these balms are well suited for preventing blisters! Keep them handy. Body Glide on Amazon.
BAND-AID Brand Pro Heal 5 Day Protect – Heel pain? Try these hydrocolloid bandages!
15. Summary
The information in this article is based on the study:
https://www.oatext.com/hydrocolloid-blister-plasters-vs-standard-plasters-for-foot-blisters-treatment-in-real-life-a-comparative-non-randomised-international-superiority-study.php
The study compared hydrocolloid blister plasters, specifically COMPEED® BLISTER, with standard plasters for treating foot blisters in real-life conditions. It was a multinational, prospective, non-randomized study conducted in the UK, Spain, and Russia between September and December 2018.
A total of 678 participants were included in the main analysis: 369 used hydrocolloid blister plasters and 309 used standard plasters. Participants recorded their experiences daily for 8 days after developing a foot blister.
The study found that hydrocolloid blister plasters provided immediate and sustained pain relief. Immediately after application, 55.8% of users reported at least a 1-point reduction in pain, exceeding the study’s predefined threshold for effective pain relief. Pain relief increased over time, with 86.7% reporting relief after 5 minutes, 92.1% after 10 minutes, and 95.9% after 30 minutes.
Compared with standard plasters, hydrocolloid blister plasters performed significantly better across several measures. Users reported better pain relief, stronger cushioning, improved adhesion, and longer wear time. Hydrocolloid plasters had a median wear time of 2 days, compared with 1 day for standard plasters.
The study also found higher satisfaction among users of hydrocolloid blister plasters. Ninety-four percent of hydrocolloid plaster users gave high satisfaction ratings, compared with 75% of standard plaster users. Nearly all hydrocolloid plaster users said they would purchase the product again and recommend it to family or friends.
Healing outcomes were more mixed. The study reported faster healing with hydrocolloid blister plasters in the UK and Spain, but this result was not consistent across all countries. In Russia, frequent daily plaster changes may have affected the ability to observe a healing-time advantage.
Safety results were comparable between hydrocolloid and standard plasters, with low rates of adverse events in both groups.
Overall, the study concluded that hydrocolloid blister plasters provided superior immediate pain relief, cushioning, adhesion, wear time, and user satisfaction compared with standard plasters. The evidence for faster healing was supportive but less consistent across all study locations.