title: The relationship of sun protection factor to minimal erythema dose, Japanese skin type, and skin color.
abstract: The relationship of sun protection factor (SPF) to minimal erythema dose (MED), Japanese skin type, and skin color was investigated on the unexposed backs of 48 healthy subjects. SPF of a UVB-sunscreen was determined using sun lamps as a light source. A significant correlation was found between SPF and MED; subjects with lower MED showed higher SPF. The average SPF decreased with increasing skin type. There was no significant correlation between SPF and skin color (L*a*b* color system).
authors.affiliation: Department of Dermatology, National Defense Medical College, Saitama, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Kawada
authors.forename: T
authors.initials: T
authors.lastname: Noda
authors.forename: M
authors.initials: M
authors.lastname: Hiruma
authors.forename: A
authors.initials: A
authors.lastname: Ishibashi
authors.forename: S
authors.initials: S
authors.lastname: Arai
mesh_terms: D000328:Adult; D044466:Asian People; D004890:Erythema / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D007564:Japan; D008297:Male; D012880:Skin Pigmentation; D013473:Sunscreening Agents / Q000008:administration & dosage*; D014466:Ultraviolet Rays / Q000009:adverse effects*
chemical_list: D013473:Sunscreening Agents