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AHK-Cu for skin: beyond hair growth While hair growth receives most attention in AHK-Cu discussions, the peptide also offers skin benefits that share mechanisms with its follicle effects

GHK-Cu (glycine-histidine-lysine-copper) is a tripeptide that occurs naturally in human plasma, with concentrations declining significantly after age 60

Again, these peptides are not FDA-approved and fall under Category 2, meaning they are legally limited to research settings and are not officially sanctioned for medical treatment

Macrocytic anemia or other abnormalities may be the first clue to B12 deficiency

This peptide is widely studied for its ability to support collagen production, tissue repair, and antioxidant activity , making it a cornerstone in research on skin health, wound healing, and cellular rejuvenation