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In the Abdulghani 1998 head-to-head trial, copper peptide outperformed both vitamin C and tretinoin for procollagen synthesis (70% vs

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The antioxidative system contains both enzymatic defenses [e.g., superoxide dismutase (SOD), catalase (CAT), peroxidase, reductase, redoxin] and metabolites [e.g., GSH, ascorbate (AsA)] [13,97,99,106]
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