Characteristics of co-use patterns to cosmetic products in high-use groups for Korean population

摘要

Cosmetic product is one of the major chemical exposure sources in real life. The use rates of most cosmetics were different by population group. People used many cosmetics simultaneously. To accurate aggregate exposure assessment, it is necessary to determine co-use patterns of cosmetic products by population group. The purpose of this study was to determine co-use patterns of cosmetics and characterize high use group in Korea. The national representative exposure factor database was established for Korean adult population (n = 1,001). The individual's simultaneous use patterns for 31 cosmetic products included actual co-use and non-use information. The co-use patterns of cosmetic products by population groups were analyzed by number of product used, Ward's hierarchical clustering method and Cohen's kappa correlation coefficient. Korean population used 8.5 ± 5.1 cosmetic products. When the population was divided into 10 groups by gender and age, 20's female was the highest cosmetic use group with 14.5 ± 3.9 products. 60's male was the lowest use group with 3.8 ± 1.6 products. The use pattern of 31 cosmetics in 20's female group clustered into five groups of cosmetics. Ten cosmetic products with high user rate were used together and they were skin toner, face cleanser, facial sunscreen, face lotion, foundation, face cream, body lotion, hand cream, hair treatment and lipstick. Four eye makeup products (eyeliner, eyeshadow, eyebrow and mascara) were used together with moderate correlation (kappa > 0.40). Nail polish and nail remover were used together (kappa = 0.95). Aggregate exposure assessment for cosmetic products might be necessary because Korean used multiple cosmetics. The cosmetic co-use patterns were different by population group. The young female group could be high-exposure group for chemicals in cosmetics. The co-use patterns could be important input data for aggregate exposure assessment.