Hideo Nakayama
Meguro Chen Dermatology Clinic, Tokyo
Title: Cosmetic allergens in the past and present
Biography
Biography: Hideo Nakayama
Abstract
Contact allergens had been investigated during the 1970s and 1980s, resulting in the discoveries of various fragrant materials, such as benzyl salicylate, hydroxycitronellal, Jasmin oil, ylang-ylang oil, sandalwood oil, etc. Other common sensitizers included RedNo.31 / Phenyl azo naphthol, and Yellow No.11. Some cases of lupus erythematosus were due to Yellow No.11, a primary sensitizer. After millennium, the incidence of these allergens decreased considerably, instead, contact allergy to metals in the cosmetics has increased. Such metals come from the dish for foundation, scrub-ball for sunscreens, eyelash curlers, etc. The caution for these metals is needed hereafter.