glutathione cystine The effects of the oral supplementation of L‐Cystine associated with reduced L‐Glutathione‐GSH on human skin pigmentation: a randomized, double‐blinded, benchmark‐ and placebo‐controlled clinical trial - Duperray - 2022 Chemical structures of cysteine and
Description
Helps to add gloss to skin and may visually fill in fine lines/wrinkles for short time Helps attract water to the upper layer of the skin and improves the product texture Helps attract water to the upper layer of the skin An aromatic blend of unspecified and possibly irritating ingredients A fragrance

How do peptide hormones work

10.1038/s41586-024-07947-3 205 ZhangG.LvS.ZhongX.LiX.YiY.LuY.et al (2024b)

It neutralizes free radicals, supports detoxification, and has been shown to brighten skin by inhibiting melanin production

I am still trying it out
