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Concentrations of GHK-Cu in the body decline significantly with age, from approximately 200 ng/mL in young adults to under 80 ng/mL by age 60, making topical replenishment meaningful

Each 0.5 fl oz bottle lasts roughly 46 weeks 1% GHK-Cu COPPER PEPTIDE: Formulated with 1% Copper Peptide GHK-Cu for a lightweight, hydrating feel

Learn about GHK-Cu Topical Serum Application technique matters more than people think: Clean, dry skin

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