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Cosmetic outcomes reported for topical use Pickart and Margolinas reviews summarize controlled cosmetic studies in which topical GHK-Cu formulations were reported to tighten loose skin, improve elasticity, increase skin density and firmness, reduce fine lines and wrinkles, reduce photodamage, and reduce hyperpigmentation, alongside increased keratinocyte proliferation
Starting with lower doses and monitoring for adverse effects is a standard, cautious approach before adjusting upward based on clinical response
Wait 1520 minutes after washing before applying tretinoin
However, the precise distinction between increased redox signaling and direct activating pro-angiogenesis pathways remains to be seen (203)
Sharma M, Sudheer S, Usmani Z, Rani R, Gupta P