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What ingredient are you most skeptical of? PDRN, NAD+, peptides, EGF we get it. Ingredient fatigue is real. Part 2 of my favourite GHK Cu peptide serums formulas #cosmeticchemist #skincaretips #copperpeptide #ghkcu #antiageingskincare GHK Cu Dosage Chart: 100 mg Vial Protocol GHK Cu Peptide Dosing Guide: Skin, Hair & Safety (2026)
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