Actively Recruiting
The Effect of Cosmetic Formulations on the Appearance of Grey Hair.
Led by Unilever R&D · Updated on 2026-04-30
380
Participants Needed
1
Research Sites
50 weeks
Total Duration
On this page
Sponsors
U
Unilever R&D
Lead Sponsor
C
Comprehensive Research Group, Inc.
Collaborating Sponsor
AI-Summary
What this Trial Is About
This study is a 6-month (180 days) single-center, double blind study designed to explore the effect of two cosmetic products on the appearance of gray hair.
CONDITIONS
Official Title
The Effect of Cosmetic Formulations on the Appearance of Grey Hair.
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Healthy male or female between 25 and 60 years old at the time of consent
- Of any race and ethnicity
- Able to read, understand study instructions and documents in English
- Has 15-35% naturally gray hair
- Available to attend all study visits
You will not qualify if you...
- History of medical conditions that may affect study results or increase risk, including cancer, insulin-dependent diabetes, renal insufficiency, chronic inflammatory disorders, asthma (excluding exercise-induced), epilepsy, uncontrolled hyperthyroidism or hypothyroidism
- Pattern hair loss or history of hair loss for medical reasons, including alopecia types or telogen effluvium
- Sensitivity or allergy to ingredients in test products, adhesives, tattoo pigments, or metals like chromium or nickel
- Immunological disorders or bloodborne diseases, or current use of immunosuppressive medications or undergoing radiation or chemotherapy
- Started or changed long-term medication within the last 6 months
- Current or recent use (past 4 weeks) of corticosteroids on the body except nasal or ocular use
- Use of other medications that may interfere with the study
- Blood clotting disorders such as hemophilia or anemia
- History of systemic granulomatous or connective tissue diseases
- Employment or administration role with the study sponsor or facility
- Use of topical or oral anti-gray hair or hair growth supplements/treatments within the last 3 months
- Other conditions or medications at the Investigator's discretion that may affect skin response or test results
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Comprehensive Research Group, Inc.
Minneapolis, Minnesota, United States, 55413
Actively Recruiting
Research Team
S
Sarah Paterson
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
QUADRUPLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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