Relative quantitative data of cosmetics consumption: An online survey in Guangzhou, China

Reliable cosmetics consumption data is crucial for exposure and safety assessment of cosmetics. However, due to absence of local data, the safety assessment of cosmetics in China relied on non-local consumption data. In this study, an online questionnaire survey was carried out to investigate the frequency and quantity of cosmetics consumption in Guangzhou, China. The reliability and validity of the questionnaire were verified through follow-up with participants and by conducting consumption records and measurements. Based on 2013 valid questionnaires collected, it was found that the prevalence of body wash, shampoo and toothpaste exceeded 80%. Personal hygiene products, such as toothpaste, facial cleanser and liquid soap, were the most frequently used cosmetics, with a median of twice a day. Moreover, liquid soap had the highest consumption amount, with a median of 4.42 g/day. Furthermore, distinct patterns of cosmetics consumption were observed when comparing different regions. In this study, the consumption levels of several cosmetics were higher than the values reported by the SCCS, indicating the existence of different exposure situations. As a large-scale investigation of cosmetic consumption in China, this study provides accurate and comparable data, marking an important milestone in ensuring the safety of cosmetics for the Chinese population.