C.RonE.SchatzkinA.et al (2011)
GHK-Cu (glycyl-L-histidyl-L-lysine complexed with copper 2+) is one of the most evidence-supported regenerative peptides available in cosmetics, with peer-reviewed data spanning collagen synthesis, gene-expression modulation, wound healing, and skin laxity
SCI, Sham vs
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Infused with Glutathione, Niacinamide, and Hyaluronic Acid, this lotion effectively brightens skin tone, reduces dark spots, and deeply moisturizes
Also, note that DMSO can oxidize sensitive residues like cysteine over time, so you may need to use degassed solvents or add antioxidants if thats a concern