CLEANSING COMPOSITIONS
Sulfate-free cleansing compositions that include a surfactant and a conditioning agent are disclosed. The cleansing compositions are suitably thick and have a desired level of clarity. The cleansing compositions, which are slightly acidic, are mild to the skin and/or eyes.
1 .- 17 . (canceled)
18 . A cleansing composition comprising:
a surfactant system comprising:
a first non-ionic surfactant in an amount of about 0.5% to about 2% by weight of the cleansing composition;
a second non-ionic surfactant in an amount of about 1% to about 5% by weight of the cleansing composition,
an amphoteric surfactant in an amount of from about 1.2% to about 10.5% by weight of the cleansing composition, and
a first anionic surfactant and a second anionic surfactant together in an amount of about 1% to about 2.5% by weight of the cleansing composition;
a conditioning agent present in an amount of about 0.1% to about 0.3% by weight of the cleansing composition;
a preservative system present in an amount of about 0.5% by weight of the cleansing composition; and
a thickener present in an amount of about 1% by weight of the cleansing composition,
wherein the cleansing composition is free of a sulfate surfactant, and
wherein the cleansing composition has a skin mildness score of IL-1α release less than about 150 pg/ml, a pH of from about 3.5 to about 5.5, and a viscosity of about 1,000-9,000 cps at 25° C.
19 . The cleansing composition of claim 18 , wherein the first non-ionic surfactant is PEG-80 sorbitan laurate, and the second non-ionic surfactant is decyl glucoside.
20 . The cleansing composition of claim 18 , wherein the amphoteric surfactant comprises a betaine.
21 . The cleansing composition of claim 18 , wherein the first anionic surfactant is sodium methyl cocoyl taurate, and the second anionic surfactant is isethionate.
22 . The cleansing composition of claim 18 , wherein the second anionic surfactant is present in an amount of less than about 1.0% by weight of the cleansing composition.
23 . The cleansing composition of claim 18 , wherein the first anionic surfactant and the second anionic surfactant are present in the cleansing composition in a ratio of about 1:1.
24 . The cleansing composition of claim 18 , wherein the conditioning agent comprises a polyquaternium component.
25 . The cleansing composition of claim 18 , wherein the cleansing composition has a transmittance greater than 40.000 percent as measured by UV spectroscopy at 800 nm and glass cuvette with 10 cm of cell path.
26 . The cleansing composition of claim 18 , wherein the preservative system comprises sodium benzoate or benzoic acid.
27 . The cleansing composition of claim 18 , wherein the thickener is selected from the group consisting of PEG-150 distearate, PEG-200 hydrogenated glyceryl palmitate or PEG-7 glyceryl cocoate.
28 . The cleansing composition of claim 18 , wherein the cleansing composition further comprises a pH adjuster.
29 . The cleansing composition of claim 28 , wherein the pH adjuster comprises an acid.
30 . The cleansing composition of claim 19 , wherein the PEG-80 sorbitan laurate is present in an amount of about 0.7% by weight of the cleansing composition, and the decyl glucoside is present in an amount of about 2.9% by weight of the cleansing composition.