| 摘要 |
PROBLEM TO BE SOLVED: To provide a titanium dioxide produced by thermal decomposition which exhibits satisfactory transparency and does not cause an unpleasant and dull feeling on a skin when used as a tanning preventive agent, and to provide a formulation for a tanning preventive agent using the same. SOLUTION: The titanium dioxide is surface-modified and covered with the silicon dioxide, is produced by the thermal decomposition, and especially, is produced by flame hydrolysis. The titanium dioxide and the formulation for a tanning preventive agent using the same is obtained by spraying a surface-treating agent onto the titanium dioxide covered with silicon dioxide, followed by treating the resultant product at a certain temperature. COPYRIGHT: (C)2006,JPO&NCIPI
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