where to inject ghk-cu for skin Unfortunately, can sting, irritate and leave lumps or a small rash at the injection site. This happens because GHK-Cu (Copper Tripeptide-1) is a small, positively charged molecule that can cause temporary Merck POLYBION A Injection 2ml Size:20 ampoules x 2 ml (40ml)
SKU: 3653809762
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