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KMID : 0604520050310010065
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Journal of the Society of Cosmetic Scientists of Korea
2005 Volume.31 No. 1 p.65 ~ p.71
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Development of UV-screening Polysilsesquioxane Spheres
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Yoon Kyung-Sup
Lim Mi-Sun
Kim Young-Baek
Jung Taek-Kyu
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Abstract
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A silsesquioxane precursor that contains p-methoxycinnamoyl group was synthesized to produce UV absorbing spherical polysilsesquioxane (PSQ) spheres with diameters of 10nm to a few {mu}m under different conditions. A dispersion of 10wt% in Vaseline of these PSQ spheres with diameters of approximately 0.6{mu}m showed SPF values of 5.7 and the identical dispersion did not turn white when applied to human hands. These UV absorbing PSQ spheres showed higher boosting effect of sun protection factor (SPF) than the well known UV blocking octyl methoxycinnamate (OMC). The results indicated that the PSQ spheres with p-methoxycinnamoyl group should be useful as the ingredients in UV screening functional cosmetics without causing allergies and whitening.
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KEYWORD
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UV absorbing, sphere, SPF, polysilsesquioxane, functional cosmetics
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