Korea Lifelong Education Center

To protect skin from harmful ultraviolet (UV), zinc oxide (ZnO) with tannin from gallnuts was treated on cotton and polyester fabrics in this study. Before the treatments, the fabrics were dyed with shikonin and xanthophyll from Gromwell and Cape Jasmine. First, this study found that xanthophyll was more effective at preventing light fade or discoloration than shikonin. Despite the highest K/S, the untreated cotton in violet faded the most intensely when exposed to UV. The color variation of untreated polyester was narrow, with little change in L, a*, and K/S. Due to the non-photochemical xanthophyll, the yellow-dyed samples treated with ZnO/polyphenol did not vary yellowness (b*: 28.838) significantly, while the violet fabrics displayed a significant decrease in K/S and an increase in b*. The combination of ZnO and polyphenol treatment improved UV absorption at 350 to 250 nm. Cu-mordanting after ZnO/polyphenols treatment caused the violet cotton to turn reddish from blueish (negative to positive b*), with a hue change of 316° to 59° and the highest ΔE (25.90±4.34) after UV exposure. In this study, the combination of ZnO/polyphenol with Cu-mordants contributed the xanthophyll-dyed polyester to achieve a minimum ΔE and keep chroma and hue after UV exposure.

Purpose: To correct misperceptions about makeup use among younger age groups and to support opportunities for education, this study analyzed makeup use and skin-care behavior among young people in their 20s. Methods: A survey was conducted among 130 female students living in Seoul/Gyeonggi Province concerning general characteristics, skin knowledge, and behavior. Frequency analysis was applied to the survey data using SPSS WIN 12.0 software for statistical processing. Result: Most of the surveyed females in their 20s used base (foundation makeup) to cover defects, and there was wide recognition that warm water should be used when washing the face. Use of a professional facial cleanser improved facial skin appearance. Because of the financial burden, however, most participants usually used self-administered skin-care. Facial massage and packs were widely used self-care treatments, and most respondents believed these treatments to be effective. The most common causes of side effects from cosmetic products involved the cleaning of cosmetic tools (p=0.022) and skin-care methods (p=0.005). Conclusion: This study provides guidelines for young cosmetic product users to overcome misinformation, incorrect usage and bad habits related to cosmetic products. This paper also provides information to a variety of cosmetic products, and by applying information, students could experience lower incidence of skin trouble when using cosmetic products.