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noted that a compound containing GHK-Cu appeared to improve collagen in skin models of photodamage
Quality, purity, and dosing are unregulated, and there is no supervision
Molecular Toxicology 2nd edn
Proc Natl Acad Sci USA 88: 46564660
Collagen peptides are the most accessible option because you dont need a prescription to get a good product
Dai Y, et al
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