ghk-cu tolerance desensitization diminishing returns antibody formation long-term use Evaluating the stability and safety of encapsulated in an Tripeptides Ghk and GhkCu-modified silver – The naturally occurring peptide GHK

Daily use of a broad-spectrum SPF 30 or higher is essential, and direct sun exposure should be minimized as much as possible during the healing window

What I wouldnt do is pay a 5-10x premium for a modification claiming a 100x potency increase without understanding that the dose translation hasnt actually been validated head-to-head in humans

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Neuropsychopharmacology 43 , 17791788 (2018)