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Regulatory and Claim Boundaries Copper peptides are permitted in cosmetic formulations without concentration limits under both U.S

Many commercial "copper peptide" products actually contain Pal-GHK rather than GHK-Cu, but the two compounds have different physicochemical properties and may not behave identically in skin

Koi Peptides is a chemical research supplier not a compounding pharmacy or outsourcing facility under sections 503A or 503B of the Federal Food, Drug, and Cosmetic Act and supplies no compounded preparations of any kind

Each dose of GHK-Cu contains a very small amount of copper relative to dietary intake