While both are copper peptides, AHK-Cu has a distinct amino acid sequence from GHK-Cu, meaning their exact biological activities and pharmacokinetics may differ
When applied topically, glutathione has been shown in multiple dermatological studies to inhibit melanin synthesis, which is the fancy way of saying it helps reduce dark spots and uneven pigmentation
[DOI] [PubMed] [Google Scholar] 105.Martins I.L., Charneira C., Gandin V., Ferreira da Silva J.L., Justino G.C., Telo J.P., Vieira A.J., Marzano C., Antunes A.M
doi: 10.1016/S0140-6736(07)60750-8
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