Changes of skin complexion after ultraviolet A (UVA) and ultraviolet B (UVB) exposure
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C YUAN, X WANG, Y TAN, L YANG…
Chinese Journal of …, 2010
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Objective To observe the alteration of skin complexion after UVA and UVB exposure. Methods The back skin of ten females with skin type Ⅲ was subjected to single exposure to solar-simulated UVA of double minimal persistent pigment darkening (MPPD) or UVB of double minimal erythema dose (MED). Skin reflectance was assessed with clinical grading, spectcolometer and Mexameter MX 18 before irra-diation, 6 hours, 1, 7 and 14 days after the irradiation. Results After UVB irradiation, a~* value and erythema index (EI) abruptly …
