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Background Household and personal care products (H&PCPs) are used frequently in the domestic environment. Different types of H&PCPs often contain the same chemicals and have potential for aggregate exposure. Therefore, product use patterns should be investigated to assess exposure and health risk. Results A nationwide survey was conducted in Korea to examine the use of 16 types of H&PCPs, to obtain data that can be used for such assessments. The initial analysis focused on identifying usage patterns, such as the frequency of use and amount of product used per application. Then, co-use in 16 product categories were analyzed. Family size, marital status and age were, respectively, recognized as the critical demographic factor for classification of the frequency of use in laundry products, cleaning products and shower products. In laundry products, cleaning products and shower products, frequent H&PCPs co-use patterns according to demographical factor were recognized. Chances of exposure of chemical ingredients to participants were investigated based on the usage of individual products. 32 chemicals among all investigated ingredients were identified to be potentially exposed to more than half of the participants, and 21 chemicals are classified above Class 4 in acute toxicity. Conclusions Personal preference was not observed both in the use frequency and the amount per application of H&PCPs, among all participants. Instead, household duties were found to be associated with the yearly use frequency of household care products. In addition, the yearly chemical profiles of individual consumer were obtained, and the chemicals that have multiple chances of exposure and concomitant health risk in daily life were identified. The results provide the overview of distribution of chemicals in daily life, and essential ground for aggregate exposure assessment in Korea.

Patterns of household and personal care product use by the Korean population: implications for aggregate human exposure and health risk