Skincare Treatment

Abstract

The invention relates to a method of treating acne by the topical administration of an acne active ingredient in the presence of a) an anhydrous composition comprising a component that in the presence of water generates heat, and b) water. The invention also relates to an acne treatment kit comprising a first composition which is anhydrous and comprises a component that in the presence of water generates heat on the skin to which it is applied and a second composition which comprises an aqueous carrier, at least one of said compositions comprising an acne active ingredient, said compositions being stored in isolation from each other and being capable of generating heat when they are combined.

1 . A method of treating acne by the topical administration of an acne active ingredient in the presence of
 an anhydrous composition comprising a component that in the presence of water generates heat, and   water.   
     
     
         2 . A method according to  claim 1 , wherein the administration of the anhydrous composition and the aqueous composition is substantially simultaneous. 
     
     
         3 . A method according to  claim 1 , wherein said acne active ingredient is present in said anhydrous composition. 
     
     
         4 . A method according to  claim 1 , wherein said acne active ingredient is present in said aqueous composition. 
     
     
         5 . A method according to  claim 1 , wherein the acne active ingredient is a keratolytic agent. 
     
     
         6 . A method according to  claim 1 , wherein the acne active ingredient is present in an amount of from 0.1% to 10% by weight of the combined anhydrous and aqueous compositions. 
     
     
         7 . A method according to  claim 1 , wherein the acne active ingredient is present in an amount of 0.1% to 5% by weight of the anhydrous composition. 
     
     
         8 . A method according to  claim 1 , wherein the acne active ingredient is present in an amount of 0.1% to 5% by weight of the aqueous composition. 
     
     
         9 . A method according to  claim 1 , wherein the component activatable by water to generate heat on the skin is selected from the group consisting of zeolites and bivalent metal halides. 
     
     
         10 . A method according to  claim 9 , wherein the component activatable by water to generate heat on the skin is magnesium chloride. 
     
     
         11 . A method according to  claim 9 , wherein said anhydrous composition comprises from 5% to 60% by weight of said component that generates heat in the presence of water. 
     
     
         12 . A method according to  claim 1 , wherein the anhydrous composition comprises an anhydrous carrier. 
     
     
         13 . A method according to  claim 12 , wherein the anhydrous carrier comprises a hydrocarbon material. 
     
     
         14 . A method according to  claim 13 , wherein the anhydrous carrier comprises mineral oil. 
     
     
         15 . A method according to  claim 1 , wherein the anhydrous composition comprises a surfactant. 
     
     
         16 . A method according to  claim 15 , wherein the surfactant is selected from the group consisting of alkyl sulphates, alkyl ether sulphates, alpha-olefin sulphates, alkylsarcosinates and aryl-sulphonated derivatives thereof. 
     
     
         17 . A method according to  claim 16 , wherein the surfactant is selected from the group consisting of sodium lauryl sulphate and sodium dodecyl sulphate. 
     
     
         18 . A method according to  claim 15 , wherein the anhydrous composition comprises from 1% to 10% by weight surfactant. 
     
     
         19 . A method according to  claim 1 , wherein the aqueous composition is a cleansing composition comprising a surfactant. 
     
     
         20 . An acne treatment kit comprising a first composition which is anhydrous and comprises a component that in the presence of water generates heat on the skin to which it is applied and a second composition which comprises an aqueous carrier, at least one of said compositions comprising an acne active ingredient, said compositions being stored in isolation from each other and being capable of generating heat when they are combined. 
     
     
         21 . A skincare formulation obtained by mixing on, or prior to application to, the skin comprising:
 a first composition which is anhydrous and comprises a component that in the presence of water generates heat;   a second composition which comprises an aqueous carrier; and   at least one acne active ingredient.   
     
     
         22 . An anhydrous composition for the treatment of acne comprising an acne active ingredient, a component that in the presence of water generates heat and a carrier therefor. 
     
     
         23 . A composition according to  claim 22 , wherein the carrier comprises a hydrocarbon. 
     
     
         24 . A composition according to  claim 23 , wherein said composition comprises a surfactant. 
     
     
         25 . A composition according to  claim 24 , wherein said surfactant is selected from the group consisting of alkyl sulphates and alkyl ether sulphates. 
     
     
         26 . A composition according to  claim 22  comprising:
 1-5% by weight acne active ingredient; 
 20-40% by weight component that in the presence of water generates heat; 
 50-85% by weight carrier; and 
 1-10% surfactant. 
 
     
     
         27 . A composition according to  claim 22  in the form of a thickened liquid which does not flow off the skin. 
     
     
         28 . An acne treatment package for dispensing a first and a second composition onto the skin, said first composition being anhydrous and comprising a component that in the presence of water generates heat and said second composition comprising an aqueous component, at least one of said compositions comprising an acne active ingredient, wherein said package comprises a first chamber and a second chamber, each of said first and second chambers having an outlet, wherein said first composition is stored in said first chamber and said second composition is stored in said second chamber, said compositions being stored in isolation from each other and the package being arranged such that said compositions are combined after passing though said respective outlet. 
     
     
         29 . A package according to  claim 28  further comprising a dispensing nozzle through which the combined compositions are dispensed onto the skin. 
     
     
         30 . A package according to  claim 28  further comprising a receptacle partitioned into first and second chambers. 
     
     
         31 . A package according to  claim 28  further comprising a tube comprising said first or said second composition and an inner tube comprising the other of said first or second composition. 
     
     
         32 . A package according to  claim 28 , wherein the package is squeezable to expel said first and second compositions. 
     
     
         33 . A process to prepare an acne treatment kit comprising inserting a first composition which is anhydrous and comprises a component that in the presence of water generates heat into a first chamber of a multi-chambered package and inserting a second composition which comprises an aqueous carrier into a second chamber of said package, at least one of said compositions comprising an acne active ingredient, and providing means for combining said compositions on, or prior to application to, the skin. 
     
     
         34 . A process of dispensing an acne treatment onto the skin comprising the application to the skin of a first composition which is anhydrous and comprises a component that in the presence of water generates heat, and a second composition which comprises an aqueous carrier, at least one of said compositions comprising an acne active ingredient and mixing said compositions to generate heat on the skin. 
     
     
         35 . A method for reducing the oily feel on the skin of an anhydrous composition including a hydrocarbon carrier comprising the incorporation of a surfactant in said composition. 
     
     
         36 . A method according to  claim 5 , wherein the keratolytic agent is salicylic acid. 
     
     
         37 . A composition according to  claim 23 , wherein the hydrocarbon comprises a mineral oil.