●  Cohort One

Help build a clearer picture of scar repair.

The research has brought us to a difficult and exciting next question: How does that potential translate into meaningful change in established scars and stretch marks? And how does the experience vary with scar age, skin tone, and other biological factors?

We are bringing together 100 people to explore this question, documenting their experience to see how far this work can go.

Planned commitment: 12-16 weeks. Applications are reviewed for suitability.

01

What you are joining

The 100 Scar Project is a participant documentation project. You use StretchSerum or ScarGel according to the agreed instructions, photograph your scar or stretch marks at set intervals and tell us what you notice.

Each record will include the context needed to understand it: scar history, time using the product and relevant changes along the way. We are looking for accurate accounts, including substantial change, modest change and no visible change.

The project is observational. It is not a controlled clinical trial, and participation does not come with a guaranteed result.

Real participant photos · Unretouched

Cohort 0 went first

An early observational project documenting the appearance of existing scars over time. Photos taken by Cohort 0 participants with the MRJP1 Labs color card. Drag the line to compare. Tap a photo to see it larger.

Participant photo, baseline, June 29, 2026: lower abdomen with a horizontal C-section scar below the MRJP1 color card.Participant photo, day 77, September 14, 2026: the same scar. Baseline Jun 29, 2026 Day 77 Sep 14, 2026
Baseline Jun 29, 2026
Day 77 Sep 14, 2026
Line chart of Scar Scores from 0 to 100 for vascularity (redness), height, pigmentation and texture, plus an overall score, for every photo in record F_C Section_1Y_30s from day 0 to day 84.

Scar Scores from 0 to 100 for each photo in this record, day 0 to day 84. Higher is more severe. Dots are single photos, lines are smoothed trends and the dashed line is the overall score.

These are internal tracking scores, not a validated clinical measure.

F_C Section_1Y_30s

Gender
Female
Scar type
C-section
Scar age
1 year
Age range
30s

77 days between
the two photos

Participant photo, baseline, June 15, 2026: raised arm with a vertical surgical scar near the elbow and the MRJP1 color card.Participant photo, day 78, September 1, 2026: the same scar. Baseline Jun 15, 2026 Day 78 Sep 1, 2026
Baseline Jun 15, 2026
Day 78 Sep 1, 2026
Line chart of Scar Scores from 0 to 100 for vascularity (redness), height, pigmentation and texture, plus an overall score, for every photo in record F_Surgical_15Y_30s from day 0 to day 82.

Scar Scores from 0 to 100 for each photo in this record, day 0 to day 82. Higher is more severe. Dots are single photos, lines are smoothed trends and the dashed line is the overall score.

These are internal tracking scores, not a validated clinical measure.

F_Surgical_15Y_30s

Gender
Female
Scar type
Surgical
Scar age
15 years
Age range
30s

78 days between
the two photos

Participant photo, baseline, June 18, 2026: breast with a vertical surgical scar running down from the areola and the MRJP1 color card. The nipple is covered with a black circle for privacy.Participant photo, day 88, September 14, 2026: the same scar. The nipple is covered with a black circle for privacy. Baseline Jun 18, 2026 Day 88 Sep 14, 2026
Baseline Jun 18, 2026
Day 88 Sep 14, 2026
Line chart of Scar Scores from 0 to 100 for vascularity (redness), height, pigmentation and texture, plus an overall score, for every photo in record F_Surgical_1Y_40s from day 0 to day 106.

Scar Scores from 0 to 100 for each photo in this record, day 0 to day 106. Higher is more severe. Dots are single photos, lines are smoothed trends and the dashed line is the overall score. ✕ marks a photo left out of the trend line.

These are internal tracking scores, not a validated clinical measure.

F_Surgical_1Y_40s

Gender
Female
Scar type
Surgical
Scar age
1 year
Age range
40s

Nipple covered for privacy.

88 days between
the two photos

Participant photo, baseline, August 12, 2026: knee with a long vertical surgical scar and the MRJP1 color card.Participant photo, day 47, September 28, 2026: the same scar. Baseline Aug 12, 2026 Day 47 Sep 28, 2026
Baseline Aug 12, 2026
Day 47 Sep 28, 2026
Line chart of Scar Scores from 0 to 100 for vascularity (redness), height, pigmentation and texture, plus an overall score, for every photo in record F_Surgical_1Y_50s from day 0 to day 47.

Scar Scores from 0 to 100 for each photo in this record, day 0 to day 47. Higher is more severe. Dots are single photos, lines are smoothed trends and the dashed line is the overall score.

These are internal tracking scores, not a validated clinical measure.

F_Surgical_1Y_50s

Gender
Female
Scar type
Surgical
Scar age
1 year
Age range
50s

47 days between
the two photos

Participant photo, baseline, August 20, 2026: forearm with a horizontal surgical scar below the MRJP1 color card.Participant photo, day 28, September 17, 2026: the same scar. Baseline Aug 20, 2026 Day 28 Sep 17, 2026
Baseline Aug 20, 2026
Day 28 Sep 17, 2026
Line chart of Scar Scores from 0 to 100 for vascularity (redness), height, pigmentation and texture, plus an overall score, for every photo in record M_Surgical_10Y_30s from day 0 to day 29.

Scar Scores from 0 to 100 for each photo in this record, day 0 to day 29. Higher is more severe. Dots are single photos, lines are smoothed trends and the dashed line is the overall score.

These are internal tracking scores, not a validated clinical measure.

M_Surgical_10Y_30s

Gender
Male
Scar type
Surgical
Scar age
10 years
Age range
30s

28 days between
the two photos

Participant photo, baseline, July 4, 2026: back of the head with a curved trauma scar above the MRJP1 color card.Participant photo, day 79, September 21, 2026: the same scar. Baseline Jul 4, 2026 Day 79 Sep 21, 2026
Baseline Jul 4, 2026
Day 79 Sep 21, 2026
Line chart of Scar Scores from 0 to 100 for vascularity (redness), height, pigmentation and texture, plus an overall score, for every photo in record M_Trauma_1Y_30s from day 0 to day 80.

Scar Scores from 0 to 100 for each photo in this record, day 0 to day 80. Higher is more severe. Dots are single photos, lines are smoothed trends and the dashed line is the overall score.

These are internal tracking scores, not a validated clinical measure.

M_Trauma_1Y_30s

Gender
Male
Scar type
Trauma
Scar age
1 year
Age range
30s

79 days between
the two photos

Each pair was rotated, scaled and cropped by hand so the scar sits in the same place. The original photos as taken, only resized and, where noted, covered for privacy. Color, skin and lighting are not edited. Distance, angle and light differ between photos. These images document changes in scar appearance over time. Results vary, and the changes shown may also reflect natural scar maturation and other factors. These observations do not establish that the product caused the changes shown, and do not show what every participant can expect. Participants received the product at no cost as part of the 100 Scar Project.

02 – Taking part

What we ask of you:

2x daily use. 1 progress photo per week.

Week 1 Week 2 Week 3

The same position, distance and light, every week.

What comes back to you:

A clear set of directions

A clinical advisor on hand for any question at any time

A record of your own experience

03

Public sharing is your choice

Applying is a request to be considered. If offered a place, you will receive participation and privacy information before agreeing to join. Permission to publish photographs or your story is a separate decision.

You do not have to post on social media to take part. You can stop participating; the consent information will explain what that means for information already collected or shared.

MRJP1 Labs

Advancing the science of repair.

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