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Published on: November 27, 2017
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Skin Tone Parameters as Possible Factors in Humectant Moisturizing Effectiveness
Harvey N Mayrovitz1, Emily Deehan2, Marissa Ruppe2
1Medical Education, Nova Southeastern University Dr. Kiran C. Patel College of Allopathic Medicine, Davie, USA.
Cureus
|July 28, 2025
Summary
Lighter skin tones may experience enhanced skin hydration after moisturizer application. Gender differences in response to moisturizers and skin tone warrant further investigation.
Area of Science:
- Dermatology
- Cosmetic Science
- Skin Physiology
Background:
- Skin hydration varies with melanin index (M), erythema index (E), and individual topology angle (ITA).
- The influence of these skin tone parameters on moisturizer-induced hydration is not well understood.
Purpose of the Study:
- To investigate if basal skin tone affects how well moisturizers hydrate the skin.
Main Methods:
- Measured M, E, and ITA on 30 adults' forearms.
- Assessed skin water content (PWC) at 0.5 mm and 2.5 mm depths before and after applying four moisturizers.
- Analyzed data by skin tone subgroups and gender.
Main Results:
- Moisturizers significantly increased skin hydration at both depths for all participants.
- Higher individual topology angle (lighter skin) showed a tendency for greater hydration increase.
- Males exhibited a positive correlation between hydration increase and ITA, unlike females.
Conclusions:
- Lighter skin tones (higher ITA) may respond better to moisturizers for hydration.
- Gender-specific responses to moisturizers suggest underlying biological differences that require further research.
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