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In another trial, 41 women with mild to advanced photodamage applied GHK-Cu eye cream for three months and saw reduced lines and wrinkles, improved skin density, and increased skin thickness better than both placebo and vitamin K cream.3 Similarly, in a pilot study investigating copper tripeptide topicals for aged skin, experts found that they increased skin thickness and elasticity, improved hydration, and boosted collagen synthesis.3 Hair growth In a review from 2023, experts explained that GHK-Cu may promote hair growth in a few different ways

All-in-one nightly remedy that stacks the impact of multiple products in a single targeted treatment to help fade the look of existing dark spots, prevent future discoloration, and promote even tone

GHK-Cu is regulated as a cosmetic ingredient, not an approved drug for therapeutic claims, and regulatory status of both the peptide and needling devices varies by jurisdiction

Here's what exists: Topical GHK-Cu vs