copper peptide ghk-cu hair growth randomized trial Peptide: Regrowth for Thinning & Alopecia 3 hair tonic at clinical concentrations GHK-Cu peptide for hair: the

Targeted Local Applications While subcutaneous injection provides systemic distribution, injecting closer to specific target areas may enhance local effects

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Two specific cautions

PloS One 14 (9), e0221330 (2019)

GHK-Cu acts as a copper-binding signalling peptide that modulates the expression of thousands of genes involved in collagen remodelling, antioxidant defence, and tissue repair

This supportive role is why its so revered for improving the look of skin elasticity and bounce