Composition for a clear cosmetic stick
View Patent ↗The present invention includes a clear cosmetic stick that has a clarity that is stable over a temperature of 5 to 45 degrees Centigrade for a time period of at least about twelve months. The clear cosmetic stick includes one or more of a branched chain fatty acid surfactant and a straight-chain fatty alcohol surfactant.
1. A clear cosmetic stick, comprising:
a polyhydric alcohol and a deodorant active material; a soap; and sodium hydroxide; and a clarity stabilization system wherein the clarity stabilization system maintains clarity in the cosmetic stick when the cosmetic stick is exposed to a temperature range of 5 to 45 degrees Centigrade for a period of at least twelve months, and wherein the clarity stabilization system of the clear cosmetic stick consists essentially of a PEG-20 isostearyl ether having a hydrophile-lipophile blend of 15.2 and a PEG-2 stearyl ether having a hydrophile-lipophile blend of 4.9, wherein the concentration of the PEG-20 isostearyl ether in the cosmetic stick is in the range of 3 to 7 percent by weight of the cosmetic stick and the concentration of the PEG-2 stearyl ether in the cosmetic stick is in the range of 0.5 to 1.5 percent by weight of the cosmetic stick.
2. The clear cosmetic stick formulation of claim 1 and further comprising one or more of a deodorant active material, a sunscreen, a skin conditioner, a nail conditioner, a fungistat, an ultraviolet absorber, an analgesic, an anti-wrinkle agent, an astringent and an antioxidant.
3. The clear cosmetic stick of claim 1 wherein the cosmetic stick includes
only one branched chain fatty alcohol surfactant in a concentration range of between 3 and 7 percent by weight of the cosmetic stick and the branched chain fatty alcohol surfactant is a PEG-20 isostearyl ether having a hydrophile-lipophile blend of 15.2; and
only one straight-chain fatty alcohol surfactant in a concentration range of between 0.5 and 1.5 percent of the weight of the cosmetic stick and the straight-chain fatty alcohol surfactant is a PEG-2 stearyl ether having a hydrophile-lipophile blend of 4.9.
4. A clear cosmetic stick, comprising:
a polyhydric alcohol;
a deodorant active material;
a soap, gel forming agent;
a clarity stabilization system; and
sodium hydroxide;
wherein the clarity stabilization system maintains clarity in the cosmetic stick when the cosmetic stick is exposed to a temperature range of 5 to 45 degrees Centigrade for a period of at least 12 months and wherein the clarity stabilization system consists essentially of a PEG-20 isostearyl ether having a hydrophile-lipophile blend of 15.2 and a PEG-2 stearyl ether having a hydrophile-lipophile blend of 4.9, wherein the concentration range of the PEG-20 isostearyl ether is in the range of 3 to 7 percent by weight of the cosmetic stick and the concentration of the PEG-2 stearyl ether is in the range of 0.5 to 1.5 percent by weight of the cosmetic stick.