Though the research on the longevity properties of this peptide are insufficient, existing research suggests that GHK-Cu — a property found in human saliva, urine and plasma and combined with a copper compound — can build collagen and facilitate DNA repair via injection, helping to recoup the stem cells we lose as we age.
“We have about 700,000 stem cells in our body when we’re born, and they go down as we age,” Aziz said. “By age 60, they’re all gone. And it’s believed that GHK-Cu helps keep the stem cells alive longer.”
For now, GHK-Cu has more aesthetic applications than medical, though Aziz does stress its antioxidant properties.
This peptide can be injected or applied topically as a face cream (there are GHK-Cu copper peptide serums marketed on Amazon as “skin perfecting.”) But because the injection is known to be especially painful, Aziz recommended topicals.

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