Water-In-Oil Type Emulsion Sunscreen Cosmetics

Abstract

The present invention provides water-in-oil type emulsion sunscreen cosmetics that achieve an excellent UV blocking effect, and have excellent effects in the prevention and inhibition of discoloration (discoloration to red). The water-in-oil emulsion sunscreen cosmetic according to the present invention is characterized by comprising: (a) octocrylene; (b) hydrophobized zinc oxide; (c) cationic surfactant; and (d) silica.

1 . A water-in-oil type emulsion sunscreen cosmetic comprising:
 (a) octocrylene;   (b) hydrophobized zinc oxide;   (c) cationic surfactant; and   (d) silica.   
   
   
       2 . The water-in-oil type emulsion sunscreen cosmetic of  claim 1 , wherein component (c), forms a surface coating on component (b). 
   
   
       3 . The water-in-oil type emulsion sunscreen cosmetic of  claim 1 , wherein the blending amount of said component (a) is 0.2 to 15% by mass. 
   
   
       4 . The water-in-oil emulsion sunscreen cosmetic of  claim 1 , wherein the blending amount of said component (b) is 0.2 to 30% by mass. 
   
   
       5 . The water-in-oil emulsion sunscreen cosmetic of  claim 1 , further comprising: (e) 0.01 to 20% by mass of silicone surfactant. 
   
   
       6 . The water-in-oil type emulsion sunscreen cosmetic of  claim 2 , wherein the blending amount of said component (a) is 0.2 to 15% by mass. 
   
   
       7 . The water-in-oil emulsion sunscreen cosmetic according of  claim 2 , wherein the blending amount of said component (b) is 0.2 to 30% by mass. 
   
   
       8 . The water-in-oil emulsion sunscreen cosmetic according of  claim 3 , wherein the blending amount of said component (b) is 0.2 to 30% by mass. 
   
   
       9 . The water-in-oil emulsion sunscreen cosmetic of  claim 2 , further comprising: (e) 0.01 to 20% by mass of silicone surfactant. 
   
   
       10 . The water-in-oil emulsion sunscreen cosmetic of  claim 3 , further comprising: (e) 0.01 to 20% by mass of silicone surfactant. 
   
   
       11 . The water-in-oil emulsion sunscreen cosmetic of  claim 4 , further comprising: (e) 0.01 to 20% by mass of silicone surfactant. 
   
   
       12 . The water-in-oil type emulsion sunscreen cosmetic of  claim 1 , wherein the blending amount of said component (a) is 0.5 to 10% by mass. 
   
   
       13 . The water-in-oil type emulsion sunscreen cosmetic of  claim 2 , wherein the blending amount of said component (a) is 0.5 to 10% by mass. 
   
   
       14 . The water-in-oil type emulsion sunscreen cosmetic of  claim 5 , wherein the blending amount of said component (a) is 0.5 to 10% by mass. 
   
   
       15 . The water-in-oil type emulsion sunscreen cosmetic of  claim 1 , wherein the blending amount of said component (a) is 1 to 7% by mass. 
   
   
       16 . The water-in-oil type emulsion sunscreen cosmetic of  claim 2 , wherein the blending amount of said component (a) is 1 to 7% by mass. 
   
   
       17 . The water-in-oil emulsion sunscreen cosmetic according of  claim 1 , wherein the blending amount of said component (b) is 1 to 25% by mass. 
   
   
       18 . The water-in-oil emulsion sunscreen cosmetic according of  claim 2 , wherein the blending amount of said component (b) is 1 to 25% by mass. 
   
   
       19 . The water-in-oil emulsion sunscreen cosmetic according of  claim 1 , wherein the blending amount of said component (b) is 10.1 to 25% by mass. 
   
   
       20 . The water-in-oil emulsion sunscreen cosmetic according of  claim 2 , wherein the blending amount of said component (b) is 10.1 to 25% by mass.