Hair treatment method
A method of providing anti-frizz to hair, comprising the steps of: (i) applying a shampoo composition to the hair, wherein the composition comprises (a) from 0.05 wt % to 1.4 wt % a soluble zinc compound. (b) a cleansing surfactant selected from anionic surfactants and mixtures thereof. (c) from 0.1 wt % to 10 wt % of a suspending agent, and (d) from 0.01 wt % to 5 wt % of a cationic deposition polymer; and; wherein the composition has a pH of from 3 to 5; and (ii) rinsing the composition from the hair.
1 . A method of providing anti-frizz to hair, the method comprising the steps of
(i) applying a shampoo composition to the hair, wherein the shampoo composition comprises
(a) from 0.05 wt % to 1.4 wt % a soluble zinc compound,
(b) a cleansing surfactant selected from anionic surfactants and mixtures thereof,
(c) from 0.1 wt % to 10 wt % of a suspending agent, and
(d) from 0.01 wt % to 5 wt % of a cationic deposition polymer; and
wherein the composition has a pH of from 3 to 5; and
(ii) rinsing the composition from the hair.
2 . The method of claim 1 , wherein the soluble zinc compound is selected from the group consisting of zinc sulphate, zinc chloride, zinc gluconate, zinc acetate, and mixtures thereof.
3 . The method of claim 2 , wherein the soluble zinc compound is zinc sulphate.
4 . The method of claim 1 , wherein a level of soluble zinc compound in the total composition is from 0.1 wt % to 1.25 wt % by weight of the total composition.
5 . The method of claim 1 , wherein the composition further comprises a preservative.
6 . The method of claim 1 , wherein the composition further comprises from 0.01 wt % to 10 wt % of an emulsified silicone.
7 . The method of claim 1 , wherein the suspending agent is selected from the group consisting of polyacrylic acids, cross-linked polymers of acrylic acid, copolymers of acrylic acid with a hydrophobic monomer, copolymers of carboxylic acid-containing monomers and acrylic esters, cross-linked copolymers of acrylic acid and acrylate esters, heteropolysaccharide gums and crystalline long chain acyl derivatives and mixtures thereof.
8 . The method of claim 7 , wherein the suspending agent is a mixture of a cross-linked polymer of acrylic acid and a crystalline long chain acyl derivative.
9 . The method of claim 1 , wherein the suspending agent is present in an amount of from 0.1 wt % to 5 wt %.
10 . The method of claim 1 , wherein the cationic deposition polymer is selected from the group consisting of cationic diallyl quaternary ammonium-containing polymers, mineral acid salts of amino-alkyl esters of homo- and co-polymers of unsaturated carboxylic acids having from 3 to 5 carbon atoms, cationic polyacrylamides, cationic polysaccharide polymers and mixtures thereof.
11 . The method of claim 10 , wherein the cationic polysaccharide polymer is selected from the group consisting of cationic cellulose derivatives, cationic starch derivatives, cationic guar gum derivatives and mixtures thereof.
12 . The method of claim 1 , wherein the cationic deposition polymer is present in an amount of from 0.02 wt % to 1 wt %.
13 . The method of claim 1 comprising the following sequential steps
i) application of the shampoo composition to the hair for a maximum time period of 20 minutes; and
ii) rinsing the hair.
14 . The method of claim 1 , wherein the shampoo composition provides anti-frizz to hair.
15 . The method of claim 1 , wherein a level of soluble zinc compound in the total composition is from 0.1 wt % to 1 wt % by weight of the total composition.