4 citations
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October 2021 in “International Journal of Cosmetic Science” This study found that C. japonicum flower extract significantly increased melanin content and cellular activity in human melanocytes and may improve follicular depigmentation and vitiligo through cAMP signaling.
28 citations
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December 2020 in “Journal of Ginseng Research” This study found that ginsenoside Rf from Panax ginseng may serve as an effective anti-pigmentation agent by inhibiting the CREB/MITF pathway, reducing melanogenesis in melanocytes and UV-irradiated human skin.
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.
This study found that Polygonum multiflorum radix ethanol extract may promote melanin synthesis, potentially helping to turn gray hair back to black by enhancing antioxidant activity and increasing tyrosinase expression.
July 2022 in “Journal of Investigative Dermatology” The combination of a plant extract and a peptide can increase hair pigmentation and may reverse greying.