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Effect of various treatments on (a) GSH levels, (b) LPO levels, and (c) catalase levels. Effect of various treatments such as blank (B) SLN hydrogel, free curcumin hydrogel, CSLN hydrogel, and the marketed formulation on antioxidant levels in skin homogenates. Data are represented as mean ± SD. Statistical significance was determined by ANOVA followed by Tukey HSD. CSLN hydrogel results in significantly better effect from all groups, except those marked with * (p < 0.001).
