abstract |
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photochromic ultraviolet shielding powder, a method for manufacturing the same, and a skin external preparation. The present invention provides photochromic properties to a ultraviolet shielding powder mainly composed of titanium oxide. more than / g E 5 A (color change), B (when restoring) Its main component is E 3 powder, and it can show excellent UV shielding effect with photochromic property. |