Hair Care Compositions For Calcium Chelation

Abstract

A hair care composition that removes calcium fatty carboxylate salts from the hair and scalp is provided. The hair care composition includes a calcium chelant, an anionic surfactant, a hydrotrope, a carrier, and optionally a zwitterionic surfactant.

What is claimed is: 
     
         1 . A hair care composition comprising:
 (a) from about 0.2% to about 10% of a calcium chelant by weight of the hair care composition, wherein the calcium chelant is selected from the group consisting of diethylenetriaminepentaacetic acid (DTPA), hydroxyethyl ethylenediamine triacetic acid (HEDTA), methylglycinediacetic acid (MGDA), N-(2-acetamido)iminodiacetic acid (ADA), N-(2-hydroxyethylimino)diacetic acid (HIDA), etidronic acid, pyrophosphoric acid, neridronic acid, aledronic acid, diethylenetriamine penta(methylene phosphonic acid) (DTPMP), 2-pyridinol-1-oxide (HPNO) hinokitiol, octopirox, and mixtures thereof;   (b) from about 5% to about 40% of an anionic surfactant by weight of the hair care composition;   (c) from about 0.1% to about 5% of a hydrotrope by weight of the hair care composition; and   (d) from about 45% to about 95% of a carrier by weight of the hair care composition, wherein the pH of the hair care composition is from about 4 to about 7.   
     
     
         2 . The hair care composition of  claim 1 , wherein the calcium chelant is selected from the group consisting of diethylenetriaminepentaacetic acid (DTPA), hydroxyethyl ethylenediamine triacetic acid (HEDTA), N-(2-acetamido)iminodiacetic acid (ADA), N-(2-hydroxyethylimino)diacetic acid (HIDA), etidronic acid, pyrophosphoric acid, neridronic acid, aledronic acid, 2-pyridinol-1-oxide (HPNO), hinokitiol, and mixtures thereof. 
     
     
         3 . The hair care composition of  claim 1  further comprising from about 0.5% to about 5% of a zwitterionic surfactant by weight of the hair care composition. 
     
     
         4 . The hair care composition of  claim 3 , wherein the hair care composition comprises from about 0.75% to about 2% of the zwitterionic surfactant by weight of the hair care composition. 
     
     
         5 . The hair care composition of  claim 3 , wherein the zwitterionic surfactant is a betaine derivative. 
     
     
         6 . The hair care composition of  claim 1 , wherein the hair care composition comprises from about 0.2% to about 5% of the calcium chelant by weight of the hair care composition. 
     
     
         7 . The hair care composition of  claim 1 , wherein the hair care composition comprises from about 0.5% to about 2% of the calcium chelant by weight of the hair care composition. 
     
     
         8 . The hair care composition of  claim 1 , wherein the hair care composition comprises from about 0.2% to about 3% of the hydrotrope by weight of the hair care composition. 
     
     
         9 . The hair care composition of  claim 1 , wherein the hydrotrope is selected from the group consisting of salts of xylene sulfonic acid, toluene sulfonic acid, cumene sulfonic acid, and mixtures thereof. 
     
     
         10 . The hair care composition of  claim 1 , wherein the hair care composition comprises from about 5% to about 20% of the anionic surfactant by weight of the hair care composition. 
     
     
         11 . The hair care composition of  claim 1 , wherein the hair care composition comprises from about 10% to about 15% of the anionic surfactant by weight of the hair care composition. 
     
     
         12 . The hair care composition of  claim 1 , wherein the anionic surfactant is selected from the group consisting of a sulfate, a sulfonate, an isethionate, and mixtures thereof. 
     
     
         13 . The hair care composition of  claim 1 , further comprising a gel network, wherein the gel network comprises a fatty alcohol and a gel network surfactant. 
     
     
         14 . The hair care composition of  claim 1 , wherein the carrier is selected from the group consisting of water, an organic solvent, and mixtures thereof. 
     
     
         15 . The hair care composition of  claim 1 , further comprising an anti-dandruff active. 
     
     
         16 . A method for removing deposits of calcium fatty carboxylate salts from hair comprising:
 (a) applying a hair care composition to the hair comprising:
 (i) from about 0.2% to about 10% of a calcium chelant by weight of the hair care composition, wherein the calcium chelant is selected from the group consisting of diethylenetriaminepentaacetic acid (DTPA), hydroxyethyl ethylenediamine triacetic acid (HEDTA), methylglycinediacetic acid (MGDA), N-(2-acetamido)iminodiacetic acid (ADA), N-(2-hydroxyethylimino)diacetic acid (HIDA), etidronic acid, pyrophosphoric acid, neridronic acid, aledronic acid, diethylenetriamine penta(methylene phosphonic acid) (DTPMP), 2-pyridinol-1-oxide (HPNO) hinokitiol, octopirox, and mixtures thereof; 
 (ii) from about 5% to about 40% of an anionic surfactant by weight of the hair care composition; 
 (iii) from about 0.1% to about 5% of a hydrotrope by weight of the hair care composition; and 
 (iv) from about 45% to about 95% of a carrier by weight of the hair care composition; 
 wherein the pH of the hair care composition is from about 4 to about 7; and 
   (b) rinsing the hair care composition from the hair.   
     
     
         17 . The method of  claim 16 , wherein the calcium chelant is selected from the group consisting of diethylenetriaminepentaacetic acid (DTPA), hydroxyethyl ethylenediamine triacetic acid (HEDTA), N-(2-acetamido)iminodiacetic acid (ADA), N-(2-hydroxyethylimino)diacetic acid (HIDA), etidronic acid, pyrophosphoric acid, neridronic acid, aledronic acid, 2-pyridinol-1-oxide (HPNO), hinokitiol, and mixtures thereof. 
     
     
         18 . The method of  claim 16 , wherein the hair care composition further comprises from about 0.5% to about 5% of a zwitterionic surfactant by weight of the hair care composition. 
     
     
         19 . The method of  claim 18 , wherein the zwitterionic surfactant is a betaine derivative. 
     
     
         20 . A hair care composition comprising:
 (a) from about 0.5% to about 2% of a calcium chelant by weight of the hair care composition, wherein the calcium chelant is selected from the group consisting of diethylenetriaminepentaacetic acid (DTPA), hydroxyethyl ethylenediamine triacetic acid (HEDTA), N-(2-acetamido)iminodiacetic acid (ADA), N-(2-hydroxyethylimino)diacetic acid (HIDA), etidronic acid pyrophosphoric acid, neridronic acid, aledronic acid, 2-pyridinol-1-oxide (HPNO), hinokitiol, and mixtures thereof;   (b) from about 5% to about 20% of an anionic surfactant by weight of the hair care composition;   (c) from about 0.1% to about 3% of sodium xylenesulfonate by weight of the hair care composition;   (d) from about 0.75% to about 2% of a zwitterionic surfactant by weight of the hair care composition; and   (e) from about 45% to about 95% of a carrier by weight of the hair care composition, wherein the pH of the hair care composition is from about 4 to about 7.