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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
10.1073/pnas.0902380106 18 HondorpE
In short: Begin with daily shots for at least three months
Shake well before every use to have the formula return to its normal state
References Menshanov PN, et al
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