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kojic japan doi: 10.1016/j.cell.2017.09.021 67 IngoldIBerndtCSchmittSDollSPoschmannGBudayKet al https://www.researchgate.net/publication/268228099/figure/fig2/AS:667716889346067@1536207520836/Proposed-acidic-degradation-pathway-of-GHKCu-in-acidic-solution.ppm A Randomized Clinical Trial Comparing the Effects of Diode Laser and Diode Laser along with Topical Application of Glutathione as an Adjunct in the Management of Gingival Hyperpigmentation | Semantic Scholar Quantity:90 Capsules