화장품의 보존제 함량 및 사용기간에 따른 미생물오염도 조사

In this study, the contents of preservatives and microbial contamination before- and after-use were investigated to assess the safety of cosmetic products and to use it as a preliminary data. Cosmetic creams and lotions of domestic brand were purchased in retail stores. A high-performance liquid chromatographic method were used to analyze methylparaben (MP), ethylparaben (EP), propylparaben (PP), butylparaben (BP), benzoic acid (BA), sorbic acid (SA), dehydroacetic acid (DHA). Of 30 products, 14 products were found to contain 5 types of preservatives and concentration was parabens (0.02~0.22%), dehydroacetic acid (0.14~0.15%). None of them exceed the cosmetic combination limits (0.8%, 0.6%, respectively). None of them exceed the cosmetic combination limits (0.8%, 0.6%, respectively). E. coli, Staphylococuus aureus, Salmonella spp. and Pseudomonas aeruginosa were not detected in all samples, and general bacteria, yeast and mold were detected in 13 of 30 samples while using them for 3 month. But the level of them does not yield the Microbial Limits. As microorganisms can greatly increase depending on the type of cosmetics and usage environment it is desirable to label the expiration date, storage and application method to secure the safety and to prevent the skin troubles.