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Prog Neuropsychopharmacol Biol Psychiatry 20:11591170 Holmay MJ, Terpstra M, Coles LD, Mishra U, Ahlskog M, Oz G, Cloyd JC, Tuite PJ (2013) N-Acetylcysteine boosts brain and blood glutathione in Gaucher and Parkinson diseases
The authors reported a 55.8% reduction in facial wrinkle volume and a 32.8% reduction in wrinkle depth compared with control serum, alongside in vitro evidence that GHK-Cu increased both collagen and elastin production in human dermal fibroblasts at concentrations as low as 0.01 nM [4]
No this is normal, and your peptides are fine
Dosing matters because GHK-CU operates through gene expression modulation
Tretinoin is one of the most powerful skincare ingredients available
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