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GHK-Cu has one of the best-established safety profiles in the peptide skincare category
Being off by even 0.2 mL changes your concentration enough to affect dosing accuracy over the life of the vial
References for this information: Molecules , February 2022, ePublication Skin Research and Technology , May 2006, pages 105-113 Journal of Cosmetic Dermatology , March 2023, pages 763-775 Antioxidants , August 2022, pages 1-18
In cosmetic ingredient lists, it is commonly identified as Copper Tripeptide-1. This small copper-binding peptide has been studied for its relationship with processes involved in skin structure, conditioning and appearance
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