June 2025 in “International Journal of Cosmetic Science” In this study, researchers developed cationic liposomes encapsulated with keratin to improve the recovery of UV-damaged hair, finding that these liposomes significantly improved keratin penetration and reduced protein denaturation and lipid peroxidation, resulting in smoother hair surfaces compared to keratin solution alone.
9 citations
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September 2018 in “Journal of Photochemistry and Photobiology B-biology” This study demonstrated that combining l-cystine and thiamin in a formulation may protect against UV-induced damage in growth-limited human epidermal keratinocytes in vitro.
February 2019 in “International Journal of Dermatology and Clinical Research” In this study, Nε-(carboxymethyl) lysine was found to weaken hair follicle morphogenesis and inhibit essential cell activities in a model simulating accumulated glycation.
14 citations
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July 2015 in “International Journal of Molecular Sciences” This study found that S-Methylmethionine sulfonium (SMMS) enhances cell survival and reduces damage from UVB irradiation in skin cells, suggesting its potential as a cosmetic ingredient for UV protection.
June 2015 in “OhioLink ETD Center (Ohio Library and Information Network)” This study found that acute UVB exposure in mice increases the synthesis of retinoic acid in the epidermis, which is necessary for normal repair from UVB light.