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Lukewarm Glutathione Face Wash What it has: Glutathione, kojic acid, Vitamin C, mulberry extract, liquorice strong ingredient list What its missing: Contains sulphates and parabens, which undermine the overall quality for daily use Verdict: The ingredient list is promising but the preservative and surfactant choices make it less suitable for sensitive skin and daily long-term use

GHK-Cu, delivered simultaneously to those same fibroblasts, amplifies the collagen signal while suppressing the excess inflammatory response

JAMA Intern Med.2016;176(2):175-183

What Ingredients Should Not Be Used With Copper Peptides Copper peptides are beloved in skincare for boosting collagen, repair, and overall skin health but some actives can interfere with their stability or increase irritation when used at the same time