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Clinical trials on skin have demonstrated improvements: In one study, GHK-Cu applied to photoaged skin for 12 weeks increased density and thickness while reducing laxity and wrinkles in 71 women
p70S6K1 phosphorylation increased in all participants, with larger fold-changes in older men receiving LEU
Vulnerability factors include early life trauma, poor social support, co-existing medical conditions, genetic predisposition and sex-based differences (Lai and Xiong, 2025)
GHK-Cu Dosage Chart The main rule: stay consistent and use the product the way it was designed to be used
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