| 摘要 |
PROBLEM TO BE SOLVED: To obtain a cosmetic containing as active ingredient fine-particle titanium dioxide highly compatible with oily phase and having high dispersibility and light resistance. SOLUTION: This cosmetic is obtained by formulating 1-80 wt.%, based on the whole cosmetic, of fine-particle titanium dioxide which is produced through an outline of the following process: a specific amount of a water-soluble aluminum compound is added to an aqueous suspension of titanium dioxide with a particle size of <=0.1μm followed by setting the resultant slurry at a specified pH value with a neutralizing agent; the slurry is then heated to >=80 deg.C and incorporated with a specific amount of a >=7C fatty acid or a water- soluble salt thereof; subsequently, the slurry pH is adjusted to a specified level followed by aging the slurry for >=30 min; finally, the pH is adjusted again, followed by performing filtration, washing, drying, and grinding operations. This cosmetic has excellent anti-suntan effect.
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