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Its non-pyrogenic, clear, and pH-neutral enough (~5.77.0) for broad compatibility

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

This inherent stability is a critical factor in why it's a candidate for oral and intranasal delivery, where it would encounter harsh environments

27 In ex vivo models, BMP4 induces transformation of squamous mucosa to columnar mucosa