Pressed powder cosmetic composition comprising flaky glass

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/25 (2006.01) A61K 8/36 (2006.01) A61K 8/89 (2006.01) A61Q 1/08 (2006.01) A61Q 1/10 (2006.01) A61Q 1/12 (2006.01)

Patent

CA 2732639

The present invention is directed to a pressed powder cosmetic composition, comprising by weight: (a) from about 75% to about 98% of a powder component, the powder component comprising a cosmetic grade flaky glass constituted of components comprising by weight at least 52% silicone dioxide and no more than 5% alkali metal oxide, and wherein the cosmetic grade flaky glass has an average thickness of 0.1-1.0 µm, an average particle diameter of 1-100 µm, and an aspect ratio, obtained by dividing the average particle diameter by the average thickness, of 10 or higher; (b) from about 1% to about 24% of a powder binder, the powder binder comprising sodium stearyl fumarate; and (c) from about 1% to about 25% of a liquid binder.

La présente invention concerne une composition cosmétique de poudre compacte comprenant, en poids, : (a) environ de 75 % à environ 98 % d'un composant de poudre comprenant lui-même du verre feuilleté de qualité cosmétique constitué de composants comprenant en poids au moins 52 % de silice fondue et 5 % maximum d'oxyde de métal alcalin, le verre feuilleté de qualité cosmétique ayant une épaisseur moyenne comprise entre 0,1 et 1,0 µm, un diamètre de particule moyen compris entre 1 et 100 µm, et un rapport d'aspect, obtenu en divisant le diamètre de particule moyen par l'épaisseur moyenne, égal ou supérieur à 10; (b) d'environ 1 % à environ 24 % d'un liant en poudre comprenant lui-même un stéarylfumarate de sodium et (c) d'environ 1 % à environ 25 % d'un liant liquide.

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