Coloured cosmetic sticks

Details Coloured cosmetic sticks Coloured cosmetic sticks

A - Human Necessities

61

K

A61K 8/46 (2006.01) A61K 8/49 (2006.01) A61Q 1/06 (2006.01) A61K 7/027 (1990.01)

Patent

CA 2072028

A coloured cosmetic stick, especially a lipstick, is provided containing water, a solidifying agent such as a wax, and a colourant which is an aluminum salt, especially an aluminum lake. The stick is formulated with less than an effective amount of C10-C26 fatty acids sufficient to form an aluminum salt with the aluminum salt colourant that would cause the stick to lose structure.

L'invention porte sur une méthode permettant d'ajouter à un bâton cosmétique coloré, plus spécialement un bâton de rouge à lèvres, de l'eau, un agent solidifiant, par exemple une cire, et un colorant constitué d'un sel d'aluminium, plus spécialement une laque d'aluminium. Le bâton est formulé avec une quantité inférieure à la quantité efficace d'acides gras en C10-C26 suffisante pour former un sel d'aluminium avec le colorant, qui entraînerait une perte de structure.

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