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Comparative investigations may evaluate formulation-specific variables, but the underlying peptide sequence and molecular properties remain unchanged

GHK-Cu is generally considered very safe because it is a biomimetic substance meaning your body already recognizes and produces it

On the day of the assay, serial dilutions (7-fold dilutions, 7 concentrations per compound and one well containing only assay buffer) of test compounds were performed in duplicate in assay buffer to appropriate concentrations in 96-well plates (Greiner, U-shape #GR-650201) using a Biomek i7 liquid handler

Note that retinol and copper peptides should not be used together to avoid potential irritation and reduced efficacy

By activating these fibroblasts, copper peptides help increase the production of both collagen and elastin, making the skin more elastic, firm, and youthful-looking