Anyone over 18 is a reasonable candidate, since the bodys natural production of GHK-Cu starts declining in early adulthood
Contact reactions in individuals sensitive to the formulas ingredients
It also needs cofactors like NADPH
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Skin Health: Promotes brighter, clearer skin by reducing melanin production and improving skin tone
Sub-99% material introduces unknown variables uncharacterized impurity peaks may have their own biological activity or confound assay readouts