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This controlled delivery explains why GHK-Cu restores copper-dependent enzymatic functions without metallic toxicity (Pickart & Margolina 2018 Int J Mol Sci)
It works gradually and safely to even out the skin tone by suppressing melanin production
However, another study showed that its absorption is variable and may be limited, but it is not completely ineffective, as some studies suggest modest increases in body glutathione levels
As more research is done, KPV may become more widely available
Selected Research References Pickart L, Margolina A
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