Still not sure whats right
The CU suffix denotes its association with a copper (II) ion, which the peptide binds with high affinity through the imidazole group of histidine and the amino-terminal amine
That last part is the headline finding from the gene-level research
The GHK-Cu peptide is found in many hair care, skin care products and dietary supplements
So, what does vitamin C do to your skin
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