Research Article
Antiphotoaging Potential of Extracts of Yin-Tonic Herbal Medicine in Skin Cell and Human Skin Equivalent
Figure 2
Effect on cell viability of yin-tonic herbal medicines and UVB irradiation in human skin equivalent model. (a) Cell viability of 3 yin-tonic herbal medicines and (b) UVB irradiation on the human skin equivalent. (c) The schematic diagram of UVB irradiation and treatment with yin-tonic herbal medicines using human skin equivalent model. (d) Effect of UVB irradiation time on MMP-1 production in human skin equivalent model. and versus nontreated group or UVB nonirradiated group.
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