US$ 25.50
copper peptide ghk-cu hair growth study clinical trial Serum ghk-cu topical serum hair growth
Description
Molecules , 28(3), 1229

In practice it is sold in the US almost exclusively as an unregulated "research use only" chemical explicitly not intended for human consumption

It promotes angiogenesis (the formation of new blood vessels) and boosts collagen production, essential for tissue repair

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