ghk-cu pros and cons Peptide GHK-Cu is a copper peptide

The "maintained improvements" group (approximately 30-40% of users) reports substantial benefit retention 6-12 months post-discontinuation, typically characterized by users who completed 6+ month treatment courses using adequate concentrations (1-2% GHK-Cu), maintained consistent application patterns, addressed underlying skin damage during treatment allowing structural improvements, optimized complementary skincare including sun protection and moisturization, maintained healthy lifestyle supporting collagen synthesis including adequate protein intake and sleep, and possessed favorable genetics for collagen production and skin aging resistance

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Kour A, Tiwari V, Aggarwal N, Sekhar Panda H, Kumar A, Tiwari S, et al

Non-clinical only: Not intended for diagnostic, therapeutic, or clinical use