L'oreal

Shiseido Company, Limited

Nof Corporation

Hiroyasu Mizuno

Takashi Ohmori

Anne-Laure Suzanne Bernard

Yuki Sugiyama

Kei-ichi Maruyama

Akira Ishikubo

Tomoyuki Kawasoe

Yuko Matsui

Yoji Tezuka

Kei-Ichi Maruyama

The invention relates to a foaming cleanser cosmetic composition containing, in a physiologically acceptable medium: &#x2014;a surfactant system comprising (i) at least one N&#x2014;(C6-C30)acyl-amino based surfactant and (ii) at least one amphoteric surfactant chosen from betaines or (C8-C20)alkyl betaines, (C8-C20)alkylamido(C1-C6)alkylbetaines and mixtures thereof; and&#x2014;at least one non associative crosslinked copolymer or acrylic acid and/or methacrylic acid, and optionally of (C1-C4)alkyl esters thereof, wherein said N&#x2014;(C6-C30)acyl-amino based surfactant being present in the surfactant system in a major weight amount, and the surfactant system being present in the composition in an amount of less than 15% by weight relative to the total weight of the composition. The invention also relates to a process for cleansing keratin materials, which consists in applying the said composition to the said keratin materials, in working it into a foam and then in rinsing off the said composition, as well as the cosmetic use of the composition as defined above, for removing makeup and/or cleansing the skin, the hair and/or mucous membranes, or for skincare.

Foaming cleanser

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

Hiroyasu Mizuno