Topical compositions having improved skin feel

Details Topical compositions having improved skin feel Topical compositions having improved skin feel

A - Human Necessities

61

K

A61K 31/00 (2006.01) A01N 47/10 (2006.01) C11D 1/90 (2006.01) C11D 1/92 (2006.01)

Patent

CA 2227967

The compositions of the present invention are useful for topical application to human skin. These compositions provide improved skin feel. These compositions can be in the form of leave-on products or products that are rinsed or wiped from the skin after use. These compositions are also useful for conditioning, desquamating, and cleansing the skin and for relieving dry skin. A topical personal care composition comprising: (a) from 0.1 % to 20 % by weight of an amphoteric surfactant having the structure (I) wherein R1 is unsubstituted, saturated or unsaturated, straight or branched chain alkyl having from 9 to 22 carbon atoms; m is an integer from 1 to 3; n is 0 or 1; R2 and R3 are independently selected from alkyl having from 1 to 3 carbon atoms and monohydroxyalkyl having from 1 to 3 carbon atoms; R4 is selected from saturated or unsaturated alkyl having from 1 to 5 carbon atoms and saturated or unsaturated monohydroxyalkyl having from 1 to 5 carbon atoms; X is selected from the group consisting of CO2, SO3, and SO4; and pharmaceutically acceptable salts of the foregoing compounds; (b) from 0.1 % to 20 % by weight of an anionic surfactant; (c) from 0.1 % to 15 % by weight of a cationic surfactant; and (d) from 0.1 % to 99.7 % by weight water.

La présente invention concerne des compositions convenant à l'application locale sur la peau humaine. Ces compositions offrent un contact cutané plus confortable. Ces compositions peuvent se présenter sous forme de produits d'application durable ou de produits à rincer et essuyer sur la peau après application. Ces compositions conviennent également au traitement, à la desquamation et au nettoyage en profondeur de la peau ainsi que pour soulager les effets des peaux sèches. Le produit de toilette d'application locale de l'invention se compose: (a) de 0,1 % à 20 % en masse d'un agent tensioactif amphotère dont la structure est représentée par la formule générale (I) et les sels pharmaceutiquement admis de ces composants; (b) de 0,1 % à 20 % en masse d'un agent tensioactif anionique; (c) de 0,1 % à 15 % en masse d'un agent tensioactif cationique; et (d) de 0,1 % à 99,7 % en masse d'eau. Dans la formule générale (I), R?1¿ est une chaîne alkyle non substituée, saturée ou insaturée, droite ou ramifiée, portant de 9 à 22 atomes de carbone; m est un entier valant de 1 à 3; n vaut 0 ou 1; R?2¿ et R?3¿ sont choisis indépendamment dans le groupe des alkyles portant de 1 à 3 atomes de carbone et de monohydroxyalkyles portant de 1 à 5 atomes de carbone et des monohydroxyalkyles saturés ou insaturés portant de 1 à 5 atomes de carbone; X est choisi dans le groupe des CO¿2?, SO¿3? et SO¿4?.

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