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And the term "copper peptides" itself is doing a lot of unearned work, because it lumps together GHK-Cu (the molecule with 50 years of evidence) with AHK-Cu, GHK-NH2, and a range of synthetic copper-binding sequences that have far thinner mechanism data
I take at least 2,500 IU daily, said Sinclair in a 2022 interview
Y., Wada, S., Sato, K., & Higashi, A
Estrogen receptors are densely distributed in skin fibroblasts and hair follicles
Biopeptide CL and GHK-Cu peptide effects on androgen receptor expression in human follicle dermal papilla cells
If this has occurred, reversing age-related greying becomes much harder
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