This study tested a natural hair dye made from papaya seed extract, celery leaf, and avocado, finding color change in animal hair but also noting tissue changes like hyperkeratosis.
August 2026 in “Pharmacy Reports” This study found that a nanoemulsion hair spray formula with 25% PEG 400 showed promising physicochemical stability, but further research is needed to assess its colloidal stability and efficacy in hair growth.
49 citations
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June 2009 in “Seminars in Cutaneous Medicine and Surgery” This article examines differences in aging among ethnic populations and highlights cosmetic procedures specific to skin of color, but reports no new research findings.
1 citations
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November 2022 in “Animals” This study found that differences in skin transcriptomes between juvenile and adult mink, as well as between black and white mink, suggest genes regulating hair color are active during early development rather than adulthood.
86 citations
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October 2017 in “Clinics in Dermatology” This review discusses the incidence, prevalence, and risk factors for epidermal cancer and premalignant epidermal neoplasia, and it reports no new clinical findings.
