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Why You Should Always Patch Test First Before you apply a GHK-Cu product all over your face, I highly recommend doing a quick patch test
Alternatives to NAC supplements If NAC doesn't quite fit your goals or if you're interested in supporting antioxidant defenses through a different approach there are several supplements and dietary strategies worth considering
Peer-reviewed journals have published studies on GHK-Cu for decades
Other biomarkers measured by the research team including blood pressure, heart rate, hypoglycemic episodes, fasting glucagon, fasting serum insulin, high-sensitivity C-reactive protin, leptin, and a general lipid panal
Kubo, H., et al
Jzwiak M, Bauer M, Kamysz W, Kleczkowska P
