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Copper peptides: useful on skin, risky by injection GHK-Cu, a tripeptide-copper complex, has become popular in anti-ageing skin creams, where laboratory studies suggest it may support collagen production and skin elasticity

This formulation comes as a sterile solution for injection in ampoules

Once absorbed, NAC readily enters cells and provides cysteine for glutathione synthesis

Handling Notes Researchers should follow all applicable laboratory safety protocols when handling biochemical compounds

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