Personal care compositions that deposit hydrophilic benefit agents

Abstract

A personal care composition comprising a hydrophilic liquid, a structurant for said hydrophilic liquid, a surface active, a lipid, and an aqueous phase; wherein said lipid, said hydrophilic liquid, said structurant, and said surface active form a lipid phase; wherein said hydrophilic liquid, said structurant, and said surface active are connected to said lipid in said lipid phase. These compositions provide improved skin and/or hair moisturization, appearance, aesthetics and skin and/or hair conditioning during and/or after application, and are useful in providing improved deposition to the desired area of the skin and/or hair. The present invention is further directed to a method of using the personal care composition.

1 . A personal care composition comprising: 
 a) a hydrophilic liquid;    b) a structurant for said hydrophilic liquid;    c) a surface active;    d) a lipid; and    e) an aqueous phase,    wherein said lipid, said hydrophilic liquid, said structurant, and said surface active form a lipid phase;    wherein said hydrophilic liquid, said structurant, and said surface active are on the surface of said lipid, within the domain of said lipid, or both on the surface and within the domain of said lipid in said lipid phase.    
   
   
       2 . The personal care composition of  claim 1  wherein said structurant is selected from the group consisting of association structure forming materials, fluid absorbent particles, inorganic particulate thickeners, and water-soluble or water-swellable polymers.  
   
   
       3 . The personal care composition of  claim 1  wherein said structurant is selected from the group consisting of fluid absorbent particles, inorganic particulate thickeners, and water-soluble or water-swellable polymers.  
   
   
       4 . The personal care composition of  claim 1  wherein said surface active is selected from the group consisting of association structure forming materials and film forming materials.  
   
   
       5 . The personal care composition of  claim 4  wherein said association structure forming materials form association structures selected from the group consisting of micelles, reverse micelles, lyotropic liquid crystals, and mixtures thereof.  
   
   
       6 . The personal care composition of  claim 4  wherein said association structure forming materials are selected from the group consisting of anionic, cationic, nonionic, amphoteric surfactants, alkoxylated polymers, polysaccharides, silicone copolyols, and aminosilicones.  
   
   
       7 . The personal care composition of  claim 4  wherein said film forming materials are selected from the group consisting of dialkylquates, ester oils, silicone oils, silicone waxes, liquid fatty alcohols and fatty acids, and microfine particles.  
   
   
       8 . The personal care composition of  claim 1  wherein said structurant and said surface active are both association structure forming materials.  
   
   
       9 . The personal care composition of  claim 1  wherein said hydrophilic liquid is present in an amount of from about 0.1% to about 90% by weight of the composition.  
   
   
       10 . The personal care composition of  claim 1  wherein said lipid phase is present in an amount of from about 1% to about 95% by weight of the composition.  
   
   
       11 . The personal care composition of  claim 1  wherein the ratio of said structurant to said hydrophilic liquid is from about 1:1000 to about 100:1.  
   
   
       12 . The personal care composition of  claim 1  wherein the ratio of said surface active to said hydrophilic liquid is from about 1:1000 to about 20:1.  
   
   
       13 . The personal care composition of  claim 1  wherein the combination of said hydrophilic liquid and said structurant form a material having a viscosity of at least about 3000 cst at 25° C.  
   
   
       14 . The personal care composition of  claim 1  wherein said lipid phase is one visually distinct phase that is packaged in physical contact with said aqueous phase while maintaining stability.  
   
   
       15 . The personal care composition of  claim 1  further comprising an additional aqueous phase that is a visually distinct phase that is packaged in physical contact with said composition while maintaining stability.  
   
   
       16 . The personal care composition of  claim 15  wherein said additional aqueous phase further comprises a surfactant.  
   
   
       17 . The personal care composition of  claim 1  further comprising an optional ingredient selected from the group consisting of structurant for aqueous phase, surfactant, and cationic polymers.  
   
   
       18 . The personal care composition of  claim 1  wherein said composition deposits at least 1 μg/cm 2  of said hydrophilic liquid on skin according to the in-vivo deposition method when the concentration of said hydrophilic liquid is at 5.0% of said personal care composition.  
   
   
       20 . A personal care composition comprising: 
 a. a hydrophilic liquid;    b. a structurant for said hydrophilic liquid;    c. a surface active; and    d. a lipid    wherein said lipid, said hydrophilic liquid, said structurant, and said surface active form a lipid phase;    wherein said hydrophilic liquid, said structurant, and said surface active are within the domain of said lipid in said lipid phase;    wherein said structurant is selected from the group consisting of fluid absorbent particles, inorganic particulate thickeners, and water-soluble or water-swellable polymers.    
   
   
       21 . A method of encapsulating active ingredients by: 
 a) combining a surface active and a hydrophilic liquid to form an association structure;    b) dispersing said association structure in a lipid phase; and    c) dispersing said lipid phase in aqueous phase.    
   
   
       22 . A method of delivering hydrophilic benefit agents to skin or hair, said method comprising the steps of: dispensing an effective amount of the personal care composition according to  claim 1  directly onto skin or hair or indirectly onto skin or hair via an implement selected from the group consisting of a cleansing puff, washcloth, and sponge and removing said composition from skin and/or hair by rinsing with water.