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Mechanisms of skin hydrating and antioxidant activities of EGCG. EGCG upregulated expression of skin hydrating genes in HaCaT cells. EGCG possessed antioxidative ability and cleared the radicals from SNP and UVB. It also inhibited activation of caspases-8 and -3, and expression of HYALs. Red arrow: Activation pathway by EGCG, and red line: Inhibition pathway by EGCG.
