Stable solid deodorant product and method for manufacturing same

Abstract

The present invention provides a deodorant formulation having improved efficacy and stability. The deodorant formulation comprises propanediol, ethylhexylglycerin, and grapefruit seed extract as the principal deodorizing actives. The combination of these deodorizing active ingredients results in a formulation with strong efficacy. The deodorant formulation of the invention may further be formed into a stable solid stick product in accordance with the methods outlined herein.

1 . A deodorant composition, comprising by weight, based on the total weight of the composition:
 from about 40-70% of propanediol;   from about 0.1-1% of ethylhexylglycerin; and   from about 0.5-2% of grapefruit seed extract.   
     
     
         2 . The deodorant composition according to  claim 1 , further comprising a gelling agent selected from the group consisting of sodium stearate, potassium stearate, and mixtures thereof. 
     
     
         3 . The deodorant composition according to  claim 2 , wherein the gelling agent is sodium stearate. 
     
     
         4 . The deodorant composition according to  claim 3 , wherein the sodium stearate is provided in an amount of about 2-10% by weight of the total composition. 
     
     
         5 . The deodorant composition according to  claim 4 , wherein the sodium stearate is provided in an amount of about 4% by weight of the total composition. 
     
     
         6 . The deodorant composition according to  claim 1 , further comprising about 5-30% glycerin by weight of the total composition. 
     
     
         7 . The deodorant composition according to  claim 6 , wherein the glycerin is provided in an amount of about 20% by weight of the total composition. 
     
     
         8 . The deodorant composition according to  claim 1 , further comprising a starch selected from the group consisting of corn starch and distarch phosphate acetate. 
     
     
         9 . The deodorant composition according to  claim 8 , wherein the starch is provided in an amount of about 0.01-2% by weight of the total composition. 
     
     
         10 . The deodorant composition according to  claim 9 , wherein the starch is distarch phosphate acetate. 
     
     
         11 . The deodorant composition according to  claim 9 , wherein the starch is corn starch. 
     
     
         12 . The deodorant composition according to  claim 1 , further comprising an emulsifier. 
     
     
         13 . The deodorant composition according to  claim 12 , wherein the emulsifier is selected from the group consisting of cetearyl alcohol, cetearyl glucoside, behenyl alcohol, and mixtures thereof. 
     
     
         14 . The deodorant composition according to  claim 13 , wherein the emulsifier is provided in an amount of about 0.001-1.0% by weight of the total composition. 
     
     
         15 . The deodorant composition according to  claim 14 , further comprising from about 0.005-0.3% by weight of the total composition of cetearyl alcohol, cetearyl glucoside or mixtures thereof. 
     
     
         16 . The deodorant composition according to  claim 14 , further comprising about 0.1% behenyl alcohol by weight of the total composition. 
     
     
         17 . The deodorant composition according to  claim 1 , further comprising a thickening agent selected from the group consisting of hydroxyethylcellulose and sodium chloride. 
     
     
         18 . The deodorant composition according to  claim 17 , wherein the thickening agent is provided in an amount of about 0.1-1.0% by weight of the total composition. 
     
     
         19 . The deodorant composition according to  claim 18 , wherein the thickening agent is hydroxyethylcellulose. 
     
     
         20 . The deodorant composition according to  claim 19 , wherein the hydroxyethylcellulose is provided in an amount of about 0.05% by weight of the total composition. 
     
     
         21 . The deodorant composition according to  claim 17 , wherein the thickening agent is sodium chloride. 
     
     
         22 . The deodorant composition according to  claim 21 , wherein the sodium chloride is provided in an amount of about 0.05% by weight of the total composition. 
     
     
         23 . The deodorant composition according to  claim 1 , further comprising a clarifying agent. 
     
     
         24 . The deodorant composition according to  claim 23 , wherein the clarifying agent is provided in an amount of about 0.01-0.1% by weight of the total composition. 
     
     
         25 . The deodorant composition according to  claim 24 , wherein the clarifying agent is sodium bicarbonate. 
     
     
         26 . The deodorant composition according to  claim 25 , wherein the sodium bicarbonate is provided in an amount of about 0.01% by weight of the total composition. 
     
     
         27 . The deodorant composition according to  claim 1 , comprising at least one further deodorizing active ingredient. 
     
     
         28 . The deodorant composition according to  claim 27 , wherein the at least one further deodorizing active ingredient is present in an amount of about 0.1-5% by weight of the total composition. 
     
     
         29 . A method of forming a deodorant stick product, comprising:
 providing a deodorant container, the deodorant container having an interior for containing deodorant product, the deodorant container having an open top end and a closed bottom end, the open top end for dispensing deodorant product;   providing the deodorant composition defined in  claim 1 ;   pouring the deodorant composition into the interior of the deodorant container through the open top end;   cooling the deodorant composition until it is in a solid state; and   covering the open top end of the deodorant container with a lid.   
     
     
         30 . A deodorant stick product manufactured in accordance with the method of  claim 29 .