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The FDA has identified potential safety concerns involving compounded injectable GHK-Cu, including possible immunogenicity related to peptide aggregation or impurities, and notes that human safety information is limited
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Cosmetic-grade GHK-Cu, labelled under the INCI name Copper Tripeptide-1, is supplied for incorporation into finished topical cosmetic products under the Cosmetic Regulations, with formulation-grade documentation
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