OIL-CONTAINING WASHING COMPOSITION

Abstract

The application concerns cosmetic wash composition in form of a gel comprising an anionic polysaccharide, a cationic polysaccharide, a pre-solubilized plant-derived oil, surfactant(s), and water wherein the composition is free of inorganic and/or organic sulfates and free of polyethylene glycol and/or polyethylene glycol-derivatives and wherein the cosmetic wash composition has a specific viscosity.

Claims

1. A cosmetic wash composition in form of a gel comprising: a. an anionic polysaccharide, and b. a cationic polysaccharide, and c. a pre-solubilized plant-derived oil, and d. 1 to 8 surfactant(s), and e. water wherein the composition is free of inorganic and/or organic sulfates and free of polyethylene glycol and/or polyethylene glycol-derivatives and wherein the cosmetic wash composition has a viscosity of 0.5 to 5 Pa s, optionally of 0.8 to 2.5 Pa s.

2. The cosmetic wash composition according to claim 1 wherein the anionic polysaccharide is selected from xanthan gums.

3. The cosmetic wash composition according to claim 1 wherein the anionic polysaccharide is a xanthan gum having an average particle size of 50 to 1250 μm.

4. The cosmetic wash composition according to claim 1 wherein the anionic polysaccharide is comprised in an amount of 0.001 to 5% by weight of the total composition, optionally 0.01 to 2.5 wt.-% and optionally 0.05 to 1 wt.-% of the total composition.

5. The cosmetic wash composition according to claim 1 wherein the cationic polysaccharide is selected from guar gums, optionally the cationic polysaccharide is guar hydroxypropyltrimonium chloride and optionally the cationic polysaccharide is guar hydroxypropyltrimonium chloride with the CAS number 65497-29-2 or hydroxypropyl guar with the CAS number 39421-75-5.

6. The cosmetic wash composition according to claim 1 wherein the cationic polysaccharide is comprised in an amount of 0.001 to 10% by weight of the total composition, optionally 0.01 to 5% by weight of the total composition, optionally 0.1 to 2.5% by weight of the total composition.

7. The cosmetic wash composition according to claim 1 wherein the plant-derived oil is selected from argan oil, castor oil, inca inchi oil, sweet almond oil, apricot oil, sunflower oil, olive oil, soy bean oil, safflower oil, cotton seed oil, corn oil, walnut oil, peanut oil, avocado oil, jojoba, palm oil, sesame oil, anise oil, lemon oil, orange oil, rosemary oil, wintergreen oil, thyme oil, lavender oil, cloves oil, hops oil, tea tree oil, citronella oil, wheat oil, barley oil, lemongrass oil, cedar leaf oil, cedarwood oil, cinnamon oil, fleagrass oil, geranium oil, sandalwood oil, violet oil, cranberry oil, eucalyptus oil, vervain oil, peppermint oil, basil fennel oil.

8. The cosmetic wash composition according to claim 1 wherein it comprises at least one vitamin in an amount of 0.001 to 15% by weight of the total composition, optionally 0.01 to 10% by weight of the total composition and optionally of 0.1 to 7.5% by weight of the total composition.

9. The cosmetic wash composition according to claim 1 comprising at least one surfactant chosen from anionic surfactants, amphiphilic surfactants and nonionic surfactants.

10. The cosmetic wash composition according to claim 1 comprising at least one anionic surfactant and one nonionic surfactant.

11. The cosmetic wash composition according to claim 1 comprising at least one glucoside surfactant.

12. The cosmetic wash composition according to claim 1 comprising a surfactant(s) in an amount from 0.1 to 20% by weight of the total composition, wherein the amount is based on the active material.

13. The cosmetic wash composition according to claim 1 comprising water in an amount of at least 60% by weight of the total composition, optionally at least 50% by weight of the total composition and optionally at least 40% of the total composition.

14. A product comprising the cosmetic wash composition according to claim 1 for moisturizing the skin.

Description

EXAMPLES

[0043]

TABLE-US-00001 Formulas fit within the scope: Ingredients (according to INCI) 1 2 3 Water QSP CAPRYL/CAPRAMIDOPROPYL BETAINE 0 3% to 7% 0 COCAMIDOPROPYL BETAINE 0 0 3% to 7% CAPRYL/CAPRYL GLUCOSIDE 1% to 3% 0 0 DISODIUM COCOYL GLUTAMATE 2% to 4% 2% to 4% 0 LAURYL GLUCOSIDE 2% to 5% 2% to 5% 2% to 5% SODIUM COCOAMPHOACETATE 2% to 4% 0 2% to 4% SODIUM GLUCONATE 0 0 2% to 4% DEXPANTENOL 0% to 3% GLYCERINE 1% to 3% 1,2-HEXANDIOL 1% to 2% GUAR HYDROXYPROPYLTRIMONIUM 0.1% to 1%   CHLORIDE CITRIC ACID 0.1% to 6%   NIACINAMIDE 0% to 1% LYSINE* 0.01% to 0.05% ARGIANIA SPINOSA KERNEL OIL* 0.01% to 0.05% SODIUM CHLORIDE* 0.001% to 0.01%  XANTHAN GUM 0.1% to 0.5% Viscosity (RS6000 cone/plan C60/1° 0.8 to 2.5 0.8 to 2.5 0.8 to 2.5 Ti L shearrate 10 s.sup.−1) Pa s Pa s Pa s Appearance Clear and Clear and Clear and homogeneous homogeneous homogeneous Irritating potential No No No *These ingredients have been added in the form of a pre-solubilized oil commercially available under the brand name Aquasil Oil ®

TABLE-US-00002 Formulas don't fit in the scope: Ingredients (according to INCI) 4 5 6 Water QSP CAPRYL/CAPRAMIDEOPROPYL 3% to 7% 3% to 7% 3% to 7% BETAINE CAPRYL/CAPRYL GLUCOSIDE 0 0 0 DISODIUM COCOYL GLUTAMATE 2% to 4% 0 0 LAURYL GLUCOSIDE 2% to 5% 0 2% to 5% SODIUM COCOAMPHOACETATE 0 0 2% to 5% SODIUM LAURYL SULFATE 0 3% to 7% 0 DEXPANTENOL 1% to 3% GLYCERINE 1% to 3% 1,2-HEXANDIOL 1% to 2% GUAR 0 0.1% to 1% 0 HYDROXYPROPYLTRIMONIUM CHLORIDE CITRIC ACID 0% to 6% NIACINAMIDE 0% to 2% LYSINE* 0 0.01% to 0.05% 0.01% to 0.05% ARGIANIA SPINOSA KERNEL OIL* 2% to 5% 0.001% to 0.01%  0.1% to 0.5% SODIUM CHLORIDE* 0 0.001% to 0.01%  0.001% to 0.01%  HYDROXYETHYL ACRYLATE 0 0 0.1% to 0.5% SODIUM ACRYLOYL DIMETHYL 0 0 0.1% to 0.5% TAURATE COPOLYMER XANTHAN GUM 1% 0.1% to 0.5% 0.1% to 0.5% Viscosity (RS6000 cone/plan C60/1° Ti 0.8 to 2.5 0.8 to 2.5 <0 Pas L shear rate 10 s.sup.−1) Pa s Pa s Appearance turbid clear turbid Irritating potential no yes no *These ingredients have been added in the form of a pre-solubilized oil commercially available under the brand name Aquasil Oil ®

[0044] Corneometry

[0045] The hydration level of the upper layers of the skin was tested via corneometry, a technique well established in the art and known by a person skilled in the art. Every commercially and calibrated corneometer may be used for testing the hydration level since hydration level always is conducted against an untreated control measurement, which may be either the measurement right before applying a test composition for the first time to a skin area or parallel measurements of a treated and an untreated area of the skin over the complete test period.

[0046] The hydration level of the upper layers of the skin is expressed in arbitrary units (Corneometric indices) ranging from approximately 0 (no hydration) to 120 (very high hydration).

[0047] For each area and for each experimental time (Ti), the following individual data is calculated: [0048] means of the triplicate Corneometric indices, [0049] absolute variations (in comparison with T0): Δ=Ti−T0, [0050] relative variations (in comparison with T0): Δ%=[(Ti−T0)×100]/T0, [0051] Differences between treated area and control for each time point.

[0052] For the absolute variations in comparison with T0 (Δ=Ti−T0), the following parameters are defined or calculated for treated area and negative control and for each experimental time Ti: number of subjects (n), mean, standard deviation, median, minimum, maximum.

[0053] A global comparison over time (ANOVA/Friedman test) of the instrumental measurements data for each test area will be performed. The ANOVA/Friedman test results in a p-value which is an indicator of significance. If the p-value of the ANOVA/Friedman test is p<=0.05 the result/effect is considered as being statistically relevant.

[0054] A total of 42 subjects (male or female) were included in the study and all subjects completed the study which means that all subjects applied the composition of the present invention twice a day for at least 14 days on the face for compositions according to example 1 and/or on a defined area on a forearm for composition according to example 2 above.

[0055] The 42 subjects included in the study had a mean age of 42 years (range from 42 to 70 years) and there were 95.2% women and 4.8% men and phototype II, III and IV represented 16.7%, 73.8% and 9.5%, respectively. [0056] a) In this test, a comparison between a skin area that was treated with a composition according to example 2 with an untreated skin area was carried out. Given are the mean values of all 42 tested subjects and the mean difference between the treated and the untreated skin area. If a result is significant was calculated via the ANOVA/Friedman test and a p-value of <0.05 was considered to be significant.

TABLE-US-00003 mean value p-value mean value untreated mean (significant at treated area area difference p < 0.05) D0 24.83 25.61 0.78 0.537 D0/T1H 27.44 25.43 2.01 0.083 D0/T2H 28.11 25.70 2.40 0.059 D0/T5H 29.66 26.65 3.01 0.015 Significant difference D1 27.79 25.44 2.35 0.074 D7 27.81 24.95 2.86 0.030 Significant difference D14 28.07 25.70 2.37 0.061 [0057] b) In this test, the control was the corneometric measurement carried out right before applying the cosmetic wash of example 1 for the first time. Given is the mean value of the 42 subjects before the first application of the product, the mean difference and the p-value according to the ANOVA/Friedman test, wherein for this measurements results having a p-value of <0.0125 were considered as statistically significant.

TABLE-US-00004 p-value treated area mean (significant at vs. D0 Mean values difference p < 0.0125) D0 33.31 — — — D0/T1H-D0 — 14.05 <0.001 Significant increase D0/T2H-D0 — 15.85 <0.001 Significant increase D0/T5H-D0 — 18.13 <0.001 Significant increase D1-D0 — 13.70 <0.001 Significant increase D7-D0 — 16.25 <0.001 Significant increase D14-D0 — 16.55 <0.001 Significant increase

[0058] Typically, cosmetic wash compositions in general tend to stress the skin e.g. because of the surfactants and other ingredients used to clean the skin which often leads to dry skin. Surprisingly, the cosmetic washes of the present invention replenish and maintain the skin's natural moisture level as can be seen in the corneometric measurements above.