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Key Differences: Injection Glutathione vs Oral or Topical Why Risks Increase Because injection bypasses natural barriers and goes straight into the bloodstream, any impurity, contamination, or incorrect dosing/administration can cause serious harm unlike oral or topical use which are inherently less invasive

A Note on the Underlying Molecule GHK-Cu is the copper-bound form of glycyl-L-histidyl-L-lysine, a tripeptide first identified in human plasma in the early 1970s by Loren Pickart