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glutathione skin lightening randomized controlled trial melanin index The Effect of Cysteine Peptide Ingestion on Brightness, a Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Human Clinical PDF) Glutathione for skin lightening:
Description
J.EngelT.GarciaA

doi: 10.1074/jbc.AC120.012571 86 EthertonMFldyCSharmaMTabuchiKLiuXShamlooMet al

On the other hand, cysteine in protein-bound form, particularly as a component of whey, has some potential to increase GSH levels [255258]

Results may vary based on individual skin characteristics and concerns
Barlaam, B
