Beyond that, patients care more about targeting concerns like lip asymmetry, thinning, or undefined borders
$ Medical Disclaimer: Certain injections may include prescription medications and are administered only under the direction of a licensed healthcare provider
That overlap is why it is sometimes discussed alongside recovery and longevity goals
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doi:10.1089/ARS.2009.2695 [PubMed] [PMC Full Text] [Full Text] Grant CM
A Nature Scientific Reports 2016 study showed GHK-Cu had no cytotoxicity to human keratinocytes at concentrations up to 5,800 M over 72 hours and did NOT induce inflammatory biomarkers (IL-1, IL-8, HSPA1A, FOSL1) unlike other copper compounds, concluding GHK-Cu has a low potential of inducing skin irritation