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The key takeaway is that GHK-CU produces measurable, documented improvements when used consistently at appropriate doses

However, results depend on consistency, bioavailability, and supportive nutrients, not just milligrams alone

The peptide is small enough (three amino acids plus a copper ion) to penetrate the stratum corneum, particularly when formulated with phospholipid-based delivery systems that enhance dermal absorption

Something we appreciate is that Prose offers subscribers a free Skincare Starter Set containing each of your skin care formulas to try out

Skin thickness and firmness: Clinical studies using topical copper peptide formulations documented measurable improvements in skin density, elasticity, and laxity reduction in human volunteers