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Topical GHK-Cu produces negligible systemic absorption transdermal bioavailability is less than 5% for unformulated aqueous solutions and rarely exceeds 1015% even with penetration enhancers like liposomes or DMSO

Oxidation : Oxygen exposure damages peptide structures

236 Another meta-analysis that included 16 trials similarly noted improved sperm numbers, concentration, hormone levels, and pregnancy rates in men with idiopathic infertility treated with SERMs

Anti-Inflammatory Properties Studies in bacterial keratitis models showed TB-500 treatment reduced inflammatory cell infiltration [7]

Stubley, et al

Using methylene blue can make this worse