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It works by stimulating dermal papilla cells and increasing follicle size
Over-the-counter (OTC) topical skin care serums that contain GHK-Cu peptidesometimes referred to on the ingredients list as copper tripeptide-1 or copper tripeptide complexoften include more than just one peptide to ensure as many peptide skin benefits as possible, including stimulating fibroblasts to get busy making more collagen or blocking enzymes that cause collagen breakdown
Turkovic et al., 2004), as well as maintained NO system function against NOS blockade (L-NAME) or overfunction (L-arginine) (for review, see Sikiric et al., 2014)
Reported side effects are generally mild
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