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KMID : 0604520110370030227
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Journal of the Society of Cosmetic Scientists of Korea
2011 Volume.37 No. 3 p.227 ~ p.236
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Photostability Evaluation of a New Sunscreen Agent, Methoxycinnamidopropyl Polysilsesquioxane
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Jung Taek-Kyu
Kim Young-Back
Yoon Kyung-Sup
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Abstract
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The new sunscreen agent, methoxycinnamidopropyl polysilsesquioxane, is manufactured as polymeric particles with an organic/inorganic hybrid composition. We have already reported the manufacturing method, physical properties, and sunprotection effects of methoxycinnamidopropyl polysilsesquioxane. In this study, we evaluated the photochemical properties and photostabilities of methoxycinnamidopropyl polysilsesquioxane that has the same functional group as a typical organic sunscreen agent, ethylhexyl methoxycinnamate (EHMC). Using the correlation of UV absorbance and fluorescence, we studied photostabilizers to enhance the photostability of methoxycinnamidopropyl polysilsesquioxane. Finally, we confirmed that octocrylene, ethylhexyl methoxycrylene, and bis-ethylhexyloxyphenol methoxyphenyl triazine were good photostabilizers for methoxycinnamidopropyl polysilsesquioxane.
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KEYWORD
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sunscreen agent, organic-inorganic hybrid, photostability, photostabilizer, methoxycinnamidopropyl polysilsesquioxane
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