Improved antiperspirant actives and formulations made therefrom

Details Improved antiperspirant actives and formulations made therefrom Improved antiperspirant actives and formulations made therefrom

A - Human Necessities

61

K

A61K 8/44 (2006.01) A61K 8/26 (2006.01) A61K 8/28 (2006.01) A61Q 15/00 (2006.01)

Patent

CA 2307667

The present invention comprises stabilizing aqueous solutions of aluminum zirconium based salts with a water soluble amino acid, especially glycine, wherein the Zr:glycine weight ratios used to form solutions of the active itself or used to form cosmetic compositions made according to this invention are in the range from 1:1.2 to 1:5, particularly 1:2 to 1:4, and more particularly in the range of 1:2 to 1:3 on a weight:weight basis. By reducing the polymerization of small zirconium species with an elevated amount of amino acid(s), the efficacy of the antiperspirant salts is maintained.

La présente invention concerne des solutions aqueuses de stabilisation de sels à base de zirconium d'aluminium avec un acide aminé soluble dans l'eau, spécialement de la glycine, les rapports en poids Zr: glycine utilisés pour former des solutions de la substance active elle-même ou utilisés pour former des compositions cosmétiques fabriquées selon la présente invention, étant de l'ordre de 1: 1,2 à 1: 5, particulièrement de 1: 2 à 1: 4, et plus particulièrement de l'ordre de 1: 2 à 1: 3 sur une base de poids: poids. En réduisant la polymérisation de petites espèces de zirconium avec une quantité élevée d'acides aminés, on conserve l'efficacité du sel antisudoral.

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