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Description
(2020) 15:e0237015
Above 500 mg, loop in your doctor
The Hostynek and Maibach group at UCSF measured exactly this in 2011: human skin permeation of GHK-Cu as a function of skin layer, with the result that the peptide accumulates in the upper stratum corneum but does not pass through to viable epidermis or dermis in any meaningful quantity 4
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doi: 10.1017/S0031182000074758
Q3: How long before results show
