Ingredient or product comparison
GHK-Cu Antioxidant Complete Guide 2026: Comparison of Mechanisms
The table below contrasts GHK-Cu's antioxidant mechanism with conventional scavengers and other peptide-based modulators. | Compound | Primary Mechanism | Enzymatic Upregulation | Duration of Effect | Copper Dependence | Validated Applications ||—|—|—|—|—|| GH
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- The table below contrasts GHK-Cu's antioxidant mechanism with conventional scavengers and other peptide-based modulators.
- | Compound | Primary Mechanism | Enzymatic Upregulation | Duration of Effect | Copper Dependence | Validated Applications ||—|—|—|—|—|| GHK-Cu | Nrf2 activation → SOD/catalase transcription | SOD-1 +37%, catalase +42% | 24–48 hours post-application | Absolute (copper ion required for activity) | UV oxidative stress, neuroinflammation, wound healing || Vitamin C (ascorbic acid) | Direct electron donation to neutralize radicals | None | 2–4 hours (plasma half-life) | None | General ROS scavenging, collagen synthesis support || Vitamin E (α-tocopherol) | Lipid peroxyl radical scavenger in membranes | None | 12–24 hours (tissue retention) | None | Lipid oxidation, cardiovascular oxidative stress || N-acetylcysteine (NAC) | Glutathione precursor + direct thiol scavenger | Indirect (via glutathione restoration) | 6–8 hours | None | Acetaminophen toxicity, COPD, heavy metal chelation || SS-31 (elamipretide) | Mitochondrial membrane stabilization + cardiolipin binding | None | 4–6 hours | None