Composition for cleansing a keratin material containing an amino acid surfactant

1. A composition for cleansing a keratin material, comprising, in an aqueous phase:

a) at least one amino acid surfactant represented by the formula (I):

wherein:

Z represents a saturated or unsaturated, linear or branched hydrocarbon group having 8 to 22 carbon atoms,

X is hydrogen or methyl group,

n is 0 or 1,

Y is selected from the group consisting of hydrogen, —CH 3 , —CH(CH 3 ) 2 , —CH 2 CH(CH 3 ) 2 , —CH(CH 3 )CH 2 CH 3 , —CH 2 C 6 H 5 , —CH 2 C 2 H 4 OH, —CH 2 OH, —CH(OH)CH 3 , —(CH 2 ) 4 NH 2 , —(CH 2 ) 3 NHC(NH)NH 2 , —CH 2 C(O)O − M + , —(CH 2 ) 2 C(O)OH, and —(CH 2 ) 2 C(O)O − M + , and

M is a salt-forming cation wherein COO is a counter-anion; and

b) calcium alginate,

wherein a weight ratio (a/b) of a) amino acid surfactant and b) calcium alginate is from 0.7 to 6.

2. The composition of claim 1 , wherein a viscosity of the composition is 30 to 90 UD, using spindle M3, or from 10 to 60 UD, using spindle M4.

3. The composition according to claim 1 , wherein in formula (I):

n is 0, and

Y is selected from the group consisting of hydrogen, —(CH 2 ) 2 C(O)OH, and —(CH 2 ) 2 C(O)O − M.

4. The composition according to claim 1 , wherein the amino acid surfactant is at least one selected from the group consisting of sodium lauroyl sarcosinate, sodium cocoyl glycinate, sodium cocoyl glutamate, disodium cocoyl glutamate, and sodium lauroyl glutamate.

5. The composition according to claim 1 , wherein an amount of amino acid surfactant ranges from 1 weight percent to 20 weight percent, based on the total weight of the composition.

6. The composition according to claim 1 , wherein an amount of calcium alginate ranges from 0.5 weight percent to 10 weight percent, based on the total weight of the composition.

7. The composition according to claim 1 , wherein the weight ratio (a/b) of a) and b) is from 0.75 to 5.

8. The composition according to claim 1 , further comprising at least one nonionic surfactant.

9. The composition according to claim 8 , wherein the nonionic surfactant is at least one selected from the group consisting of (C 8-18 alkyl)(poly)glycosides, ethoxylated C 8 -C 30 fatty acid esters of sorbitan, polyethoxylated C 8 -C 30 fatty alcohols and polyoxyethylenated C 8 -C 30 fatty acid esters.

10. A composition, comprising:

from 0.5 weight percent to 10 weight percent calcium alginate based on the total weight of the composition;

from 1 weight percent to 20 weight percent amino acid surfactant(s) based on the total weight of the composition; and

water;

wherein a weight ratio (a/b) of a) the amino acid surfactant(s) and b) the calcium alginate is from 0.7 to 6, and wherein the amino acid surfactant is represented by the formula (I):

wherein:

Z represents a saturated or unsaturated, linear or branched hydrocarbon group having 8 to 22 carbon atoms,

X is hydrogen or methyl group,

n is 0 or 1,

Y is selected from the group consisting of hydrogen, —CH 3 , —CH(CH 3 ) 2 , —CH 2 CH(CH 3 ) 2 , —CH(CH 3 )CH 2 CH 3 , —CH 2 C 6 H 5 , —CH 2 C 2 H 4 OH, —CH 2 OH, —CH(OH)CH 3 , —(CH 2 ) 4 NH 2 , —(CH 2 ) 3 NHC(NH)NH 2 , —CH 2 C(O)O − M + , —(CH 2 ) 2 C(O)OH, and —(CH 2 ) 2 C(O)O − M + , and

M is a salt-forming cation wherein COO is the counter-anion.

11. The composition according to claim 10 , wherein in the formula (I),

n is 0, and

Y is selected from the group consisting of hydrogen, —(CH 2 ) 2 C(O)OH, and —(CH 2 ) 2 C(O)O − M + .

12. A method for cleansing a keratin material, comprising applying a composition according to claim 1 on the keratin material.

13. The composition according to claim 1 , comprising:

from 2 weight percent to 10 weight percent of the at least one amino acid surfactant based on the total weight of the composition; and

from 1 weight percent to 6 weight percent calcium alginate based on the total weight of the composition,

wherein the amino acid surfactant is at least one selected from the group consisting of sodium lauroyl sarcosinate, sodium cocoyl glycinate, sodium cocoyl glutamate, disodium cocoyl glutamate, and sodium lauroyl glutamate.

14. The composition according to claim 1 , comprising:

from 2 weight percent to 10 weight percent of the at least one amino acid surfactant based on the total weight of the composition; and

from 1 weight percent to 6 weight percent calcium alginate based on the total weight of the composition,

wherein the amino acid surfactant is at least one selected from the group consisting of sodium cocoyl glycinate and disodium cocoyl glutamate.

15. The composition according to claim 1 , wherein M is sodium, potassium, ammonium, or triethanolamine.

16. The composition according to claim 10 , wherein M is sodium, potassium, ammonium, or triethanolamine.