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https://m.media-amazon.com/images/I/61WNi4UbmAL._AC_UF1000,1000_QL80_.jpg The one well-designed skin RCT used 500 mg x2/week Available Options:50mg X 3pk Paraben-Free ghk-cu stability does ghk cu need to be refrigerated in fridge peptide shelf life reconstituted

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