Liquid non-ionic salt-free skin and hair treatment composition that contains lauroyl n-methyl glucamide

Abstract

Compositions and methods for their use in treating human or other mammalian skin and hair. Non-ionic, salt-free non-solidifying formulations of Lauroyl N methyl glucamide and alkyl glycosides are disclosed that impart beneficial barrier properties to skin and hair.

1 . An aqueous composition free of ionic surfactants for use as a shampoo or skin cleanser/hydrating lotion, consisting essentially of an aqueous formulation of Lauroyl N-methyl-glucamide (LMG) at a concentration between 0.5% and 30% by weight and alkyl polyglycoside at a concentration of between 0.5% and 30% by weight, with the weight ratio of the two compounds LMG and alkyl polyglycoside of between 2:1 and 1:3 and which remains liquid at temperatures below 0° C.,
 where the alkyl polyglycoside has the formula (II) or Formula (III) below: 
 
       
         
           
           
               
               
           
         
         wherein R 1  is a monovalent organic radical having from about 6 to about 30 carbon atoms, preferably from 6 to 12 carbon atoms; Z is saccharide residue having 5 or 6 carbon atoms; and b is a number having a value of 12 or less. 
       
     
     
         2 . The composition of  claim 1 , wherein the weight ratio of LMG and alkyl glucoside is between 2:1 and 1:3 and which remains liquid at temperatures below 0° C. 
     
     
         3 . The composition of  claim 1 , wherein z is or includes a glucose residue. 
     
     
         4 . The composition of  claim 1 , wherein the composition includes one or more additives selected rom viscosity modifiers, fragrances, preservatives, silicones, essential oils, conditioners, and therapeutic agents. 
     
     
         5 . The composition of  claim 1 , wherein the composition includes glycerol. 
     
     
         6 . The composition of  claim 1 , wherein the composition contains Lauroyl methyl-glucamide at a concentration of about 5-15% by weight, decyl glucoside between 20-30% by weight and glycerol between 5-25% by weight and which remains liquid at temperatures below 0° C. 
     
     
         7 . The composition of  claim 1 , wherein the composition contains Lauroyl methyl-glucamide contains at a concentration of about 5-15%, decyl glucoside between 5-10% and glycerol between 5-25% and which remains liquid at temperatures below 0° C. 
     
     
         8 . The composition of  claim 1 , wherein the composition contains Lauroyl methyl-glucamide at a concentration of about 3% by weight, decyl glucoside is between 3-8% by weight, glycerol is at 17% by weight, and which remains liquid at temperatures below 0° C. 
     
     
         9 . The composition of  claim 1 , wherein the composition contains Lauroyl methyl-glucamide at a concentration of about 10% by weight, decyl glucoside of about 5% by weight, glycerol at 12% by weight, and which remains liquid at temperatures below 0° C. 
     
     
         10 . A method of fortifying or repairing the epidermal water barrier of animal skin comprising applying to the animal skin on effective quantity of the composition of  claim 1 . 
     
     
         11 . The method of  claim 10 , wherein the animal is human. 
     
     
         12 . The method of  claim 11 , wherein the human skin is infected with a fungus infection. 
     
     
         13 . A method of fortifying or repairing the water barrier of hair comprising applying to the animal skin on effective quantity of the composition of  claim 1 . 
     
     
         14 . The method of  claim 13 , wherein the animal is human. 
     
     
         15 . The method of  claim 14 , wherein the human skin is infected with a fungus infection.