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It's injecting air into the vial during reconstitution, which creates positive pressure that forces solution back through the needle on subsequent draws, introducing contamination risk with every use

Description Pro Research Peptide offers this product exclusively for research applications in the form of a lyophilized (freeze-dried) powder

(GHK-Cu 0.5%) Naturally occurring peptide known for its ability to regenerate skin and increase cellular turnover to tighten loose skin, enhance elasticity, reduce wrinkles, and reverse the thinning of aged skin

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