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biological importance of glutathione peroxidase Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification Glutathione peroxidase - Wikipedia
Description
uptake of cystine through system x c (xCT and CD98) and subsequent reduction by thioredoxin reductase (TXNRD1)

Sikiric et al., 2016

+ Key Benefits: Brightens and evens skin tone
Plasma concentrations of GHK in humans are reported at roughly 200 ng/mL in young adults and decline to approximately 80 ng/mL by age sixty [2]
