Nof Corporation

Shiseido Company, Limited

Yoji Tezuka

Takashi Ohmori

Kei-ichi Maruyama

Yuki Sugiyama

Akira Ishikubo

Tomoyuki Kawasoe

Yuko Matsui

Muneaki Iizuka

Hiroyasu Mizuno

Kei-Ichi Maruyama

Provided is a cosmetic composition which has a structure-recovering property, is transparent, is satisfactory in smoothness when applied to the skin or hair, and has a good feeling in use, which comprises components (A) to (D) as described.

Cosmetic composition having both transparent appearance and structural recoverability

Cosmetic bases consisting of alkylene oxide derivatives represented by the general formula (I): Z&#x2014;{O(AO)(EO)&#x2014;(BO)H}(I) wherein Z is a residue derived from a compound having three to nine hydroxyl groups by the removal of the hydroxyl groups; a is 3 to 9; AO is Coxyalkylone; EO is oxyethylene; l and m represent the average numbers of added Coxyalkylene molecules and oxyalkylene molecules respectively and satisfy the relationships: 1&#x2266;1&#x2266;50 and l&#x2266;m&#x2266;50 respectively; the AO/EO weight ratio is 1/5 to 5/1 and AO's and EO's may be added at random or in block; BO is oxyalkylene having 4 carbon atoms; and n represents the average number of added BO molecules and satisfies the relationship: 0.5&#x2266;n&#x2266;5.

Cosmetic bases and cosmetics containing the same

The present invention is to provide a new compound having a rough skin improving effect, excellent in safety, excellent in texture in use, especially free of sticky feeling, excellent in refreshing feeling, and capable to improve the base agent stability as a component. An alkylene oxide derivative is characterized by being represented by the below-described general formula (I):(formula I)Z&#x2014;{O-[(AO)-(EO)]-R}&#x2003;&#x2003;(I)(In the formula, Z is the residue obtained by removing hydroxyl groups from the dimer diol, EO is an oxyethylene group, AO is an oxyalkylene group having 3 to 4 carbon atoms, and the addition form is block-type. The symbols a and b are the average addition mole numbers of the above-described oxyalkylene group and the oxyethylene group, respectively, and they are 1&#x2266;2 a&#x2266;150 and 1&#x2266;2 b&#x2266;150. The percentage of the oxyethylene groups with respect to the sum of the oxyalkylene groups having 3 to 4 carbon atoms and the oxyethylene groups is 10 to 99 mass %. Rs may be either identical to or different from each other, and they are hydrocarbon groups having 1 to 4 carbon atoms.)

Alkylene oxide derivative and skin external preparation containing the same

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Kawasaki, Japan

Yoji Tezuka