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That distinction matters in a category where "copper peptide" is increasingly used as a marketing term rather than as proof of potency

And that's where they saw those other percentages that I mentioned

Elkholy, N., Hariri, M

GHK-Cu peptide has been researched for its potential across a variety of functions (1) including that it may tighten and reverse the thinning of aging skin structure, supporting the extracellular matrix, that it may restore the skin barrier and moderate texture, hyperpigmentation and lesions, may support tissue repair and mitigate inflammation, may stimulate increasing hair follicle size, may exert antioxidant properties and, finally, may exhibit gene restructuring potential