12 citations
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September 2018 in “International Journal of Cosmetic Science” This study demonstrated that the biomimetic peptide PTP20 may help preserve hair pigmentation and reduce greying by enhancing melanocyte function and increasing melanin production in human hair follicles.
July 2022 in “Journal of Investigative Dermatology” The combination of a plant extract and a peptide can increase hair pigmentation and may reverse greying.
1 citations
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November 2022 in “International journal of trichology” In this case study, a 25-year-old female with premature hair graying achieved over 90% conversion of gray hair to black hair after 5 months of treatment with a topical peptide solution and hair supplements.
62 citations
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December 1966 in “Endocrinology” This study observed that injecting mice with α-MSH resulted in black hair regrowth in shaved and plucked areas, suggesting a potential link to the agent darkening hair in animals with a specific pituitary tumor.
28 citations
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December 2019 in “Skin appendage disorders” This review discusses medication-induced gray hair repigmentation, highlighting that certain anti-inflammatory drugs and melanogenesis stimulators can cause diffuse repigmentation, though evidence remains low-quality and these medications are not currently indicated for this purpose.