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The Relationship of Skin Color, UVB-Induced Erythema, and Melanogenesis

1985; Elsevier BV; Volume: 84; Issue: 4 Linguagem: Inglês

10.1111/1523-1747.ep12265342

1523-1747

Shigeaki Shono, Makoto Imura, Midori Ota, Satoshi Ono, Kiyoshi Toda,

melanin and skin pigmentation

The relationship between skin color, delayed erythema, and delayed tanning (DT) elicited by a single exposure of UVB was investigated.Both constitutive and facultative pigmentation were determined by skin reflectance using a melanometer.Skin reflectance using visible light was well correlated to the minimal immediate pigment darkening dose elicited by UV A irradiation, which may relate to epidermal melanin content, a determinant of skin color.Minimal erythemal dose (MED) was well correlated to skin color, but there was less correlation between minimal melanogenic dose and skin color or the MED, since melanogenesis is controlled by genetic factors.DT also correlated to the dose of UVB in terms of MED.A coefficient of the regression line of DT may suggest the tanning capacity of skin.The possibility of detecting mild photosensitivity in individuals from a regression line of the MED on skin color is suggested.