ghk cu extends anagen phase hair cycle GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) is an endogenous copper-binding tripeptide involved in tissue remodeling and gene regulation. In scalp biology, it has been studied for its effects on dermal papilla signaling, extracellular matrix facial Size:10 mL (1000 mcg / mL) Bacteriostatic Water Vials -
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