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http://dx.doi.org/10.15230/SCSK.2014.40.2.121

Preparation of Silica Coated Zinc Oxide and UV Protection Effect  

Kim, Won Jong (R&D Center, Hankook Cosmetics MAFG Co., Ltd.)
Kang, Kuk Hyoun (Department of Engineering Chemistry, Chungbuk National University)
Lee, Gi Yong (R&D Center, Hankook Cosmetics MAFG Co., Ltd.)
Kim, Tae Won (R&D Center, Hankook Cosmetics MAFG Co., Ltd.)
Choi, Jong Wan (R&D Center, Hankook Cosmetics MAFG Co., Ltd.)
Lee, Dong Kyu (Department of Engineering Chemistry, Chungbuk National University)
Publication Information
Journal of the Society of Cosmetic Scientists of Korea / v.40, no.2, 2014 , pp. 121-131 More about this Journal
Abstract
Due to the high UV light scattering effect of Zinc oxide (ZnO), it is frequently used in sunscreen skincare products. Recently ZnO coated with silica has been used in cosmetics to improve UV protection, texture, decreased photocatalytic activity, dispersibility and stability of the skin care product. In this study, we developed a ZnO composite powder coated with silica for the future application to skincare products to block UV rays that could cause photoaging. To improve consumer's satisfaction rating, we used ZnO microparticles which are widely used in the cosmetics industry. The silica was coated using hydrothermal method with sodium silicate and acid hydrolysis. UV protection of the composite powder was analyzed by UV-Vis and in-vitro test and the advantages for practical use of this powder as a skincare product were determined.
Keywords
zinc oxide; UV protection; sodium silicate; silica; hydrothermal method;
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