Personal care compositions comprising a zinc containing material in an aqueous surfactant composition

Abstract

Disclosed are compositions comprising an effective amount of a zinc containing material having an aqueous solubility within the composition of less than about 25% by weight at 25° C.; from about 5% to about 50% of a surfactant; and from about 40% to about 95% water; wherein the pH of the composition is greater than about 7. Further disclosed are compositions comprising an effective amount of a zinc containing material having an aqueous solubility within the composition of less than about 25% by weight at 25° C.; from about 5% to about 50% of a surfactant; and from about 0.1% to about 5% of a zinc ionophoric material; from about 40% to about 95% water; and wherein the pH of the composition is greater than about 7.

1 . A personal care method, comprising the step of topically applying a personal care composition to areas of the body other than the scalp and hair growing therefrom, the personal care composition comprising:
 a. a zinc containing material having an aqueous solubility within the composition of less than about 25% by weight at 25° C.;   b. one or more surfactants; and   c. from about 40% to about 95% of added water,   wherein the pH of the composition is greater than about 7.   
     
     
         2 . The personal care method of  claim 1 , wherein the area of the body is the underarm. 
     
     
         3 . The personal care method of  claim 1 , wherein the area of the body is the groin and/or feet. 
     
     
         4 . The personal care method of  claim 1 , wherein the composition comprises from about 0.01% to about 5%, by weight of the composition, of the zinc containing material. 
     
     
         5 . The personal care method of  claim 1 , wherein the composition comprises from about 0.1% to about 3%, by weight of the composition, of the zinc containing material. 
     
     
         6 . The personal care method of  claim 1 , wherein the zinc containing material is selected from the group consisting of inorganic materials, natural zinc containing materials, ores, minerals, organic salts, polymeric salts, and mixtures thereof. 
     
     
         7 . The personal care method of  claim 6 , wherein the inorganic material comprises zinc oxide. 
     
     
         8 . The personal care method of  claim 7 , wherein the composition further comprises a component selected from the group consisting of sodium bicarbonate, sources of carbonate anions, and mixtures thereof. 
     
     
         9 . The personal care method of  claim 1 , wherein the zinc containing material is a zinc-containing layered material. 
     
     
         10 . The personal care method of  claim 9 , wherein the zinc-containing layered material is selected from the group consisting of basic zinc carbonate hydroxide, zinc copper carbonate, copper zinc carbonate hydroxide, phyllosilicate containing zinc ions, layered double hydroxide, hydroxy double salts, and mixtures thereof. 
     
     
         11 . The personal care method of  claim 9 , wherein the zinc-containing layered material is selected from the group consisting of zinc hydroxycarbonate, hydrozincite, basic zinc carbonate, and mixtures thereof. 
     
     
         12 . The personal care method of  claim 9 , wherien the zinc-containing layered material is hydrozincite or basic zinc carbonate. 
     
     
         13 . The personal care method of  claim 1 , wherein the composition is substantially free of zinc pyrithione. 
     
     
         14 . The personal care method of  claim 1 , wherein the zinc containing material has a relative zinc lability of greater than about 15%. 
     
     
         15 . The personal care method of  claim 1 , wherein the zinc containing material has a relative zinc lability of greater than about 20%. 
     
     
         16 . The personal care method of  claim 1 , wherein the zinc containing material has a relative zinc lability of greater than about 25%. 
     
     
         17 . A personal care method, comprising the step of topically applying a personal care composition to the underarm, the personal care composition comprising:
 a. from about 0.01% to about 5% of a zinc-containing layered material having an aqueous solubility within the composition of less than about 25% by weight at 25° C.;   b. one or more surfactants; and   c. from about 40% to about 95% of added water,   wherein the pH of the composition is greater than about 7.   
     
     
         18 . The personal care method of  claim 17 , wherein the zinc-containing layered material has a relative zinc lability of greater than about 15%. 
     
     
         19 . The personal care method of  claim 17 , wherein the zinc-containing layered material comprises hydrozincite and/or basic zinc carbonate. 
     
     
         20 . A personal care method, comprising the step of topically applying a personal care composition to the groin and/or feet, the personal care composition comprising:
 a. from about 0.01% to about 5% of a zinc-containing layered material having an aqueous solubility within the composition of less than about 25% by weight at 25° C.;   b. one or more surfactants; and   c. from about 40% to about 95% of added water,   wherein the pH of the composition is greater than about 7.