ghk cu enlarges hair follicles GHK-Cu: The Copper Peptide for Skin, & Anti-Aging What Does Clinical Research Indicate

May support melatonin signaling and GABA-mediated relaxation

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Delta-sleep-inducing peptide (DSIP): An update

GHK-Cu has also been linked to several other processes that support tissue creation and has been found to: Stimulate the synthesis of collagen in skin cells [3] Increase the accumulation of protein [3] Increase synthesis of decorin [4] Stimulate the synthesis of metalloproteinases Suppress the production of the inflammatory cytokine interleukin-6 [2] Stimulate antioxidant gene activity [2] Essentially, GHK-Cu is believed to help the body break down old tissue, repair DNA, and create new, healthier tissue

But "natural" doesn't automatically mean safe, and "synthetic" doesn't automatically mean dangerous