Tripeptides such as GHK-Cu have an established safety record in topical and cosmetic applications, showing low cytotoxicity and reduced skin irritation compared with other copper compounds, and acceptable tolerability in clinical cosmetic studies [23, 74, 93]
However, long-term human safety data remains limited, and products sold online are labeled strictly for research use
Breakouts are deep, cystic, or spreading to new areas
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variable topically depending on formulation Bioavailability 49557-75-7 CAS # 73587 PubChem ID Developed By 1973 Dr
It is manufactured in an FSSAI, WHO-GMP, HACCP, and ISO-certified facility