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Description
Research remains in early stages with no human clinical trials currently approved

While GH deficiency can cause hair problems, supplementing GH in normal individuals does not reliably improve hair growth

This is fundamentally different from how minoxidil works, which primarily dilates blood vessels, or how finasteride works, which blocks DHT production

Two of the most commonly referenced forms are: GHK-Cu (Copper Tripeptide-1) AHK-Cu (Copper Tripeptide-3) While both belong to the copper peptide family, they are used differently in cosmetic formulation depending on whether the goal is skin-focused or scalp- and hair-focused performance

Substrate specificity of nicotinamide methyltransferase isolated from porcine liver (in Eng)

Not evaluated or approved by the FDA
