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Clinical studies have used GHK-Cu at concentrations ranging from 0.01% to 1%, with most effective topical products formulated between 0.05% and 0.5%
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The worked examples below show how the same 5 mg vial behaves at different solvent volumes: Notice that adding more water does not change the total amount of peptide it only changes how much liquid contains a given dose
doi: 10.1002/fsn3.1187 223
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