| 摘要 |
The present invention provides an O/W emulsified composition which contains an organic UV absorber in an oil state such as octocrylene and a solid organic UV absorber, and is excellent in UV protection ability, formulation stability, and feeling in use. The composition according to the present invention is an O/W emulsified composition, comprising: (a) an organic UV absorber in an oil state at 20° C., comprising (a1) octocrylene; (b) an organic UV absorber in a solid state at 20° C., selected from (b1) bis-ethylhexyloxyphenol methoxyphenyl triazine and (b2) methylene bis-benzotriazolyl tetramethylbutylphenol; and (c) a polyoxyethylene/polyoxyalkylene alkyl ether block polymer represented by formula (1) or (2): R1O—(PO)m-(EO)n-H (1) wherein R1 is a hydrocarbon group having 16 to 18 carbon atoms; PO is an oxypropylene group, EU is an oxyethylene group, and PO and EO are added to each other in block form; and m and n respectively represent average addition mole number of PO and EO, 70>m>4, 70>n>10, and n>m; R2O-(AO)p-(EO)q-R3 (2) wherein R2 and R3 are either identical to or different from each other, and each of them is a hydrocarbon group having 1 to 4 carbon atoms; AO is an oxyalkylene group having 3 to 4 carbon atoms, EO is an oxyethylene group, and AO and EO are added to each other in block form; and p and q respectively represent average addition mole number of AO and EO, 1≰p≰70, 1≰q≰70, and 0.2<(q/(p+q))<0.8, and wherein average particle size of the oil phase comprising the component (a) is 700 nm or less.
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