METHOD FOR TREATING HAIR AND SCALP

Abstract

Methods, processes, and kits-of-parts for treating hair and scalp and increasing blood circulation of the scalp are provided. The methods and processes include applying aqueous compositions onto hairs and scalps, wherein the aqueous compositions comprise dispersed scrub particles that provide further improvement of blood circulation compared to scalps treated only with cleansing and carbon dioxide comprising compositions.

Claims

1. A process for treating human scalp and hair, the process comprising: a) applying a first aqueous non-cleansing composition onto a scalp and hair, massaging the first aqueous non-cleansing composition into the scalp and the hair, and optionally rinsing the first aqueous non-cleansing composition off the scalp and the hair, the first aqueous non-cleansing composition comprising dispersed particles with an average particle size in the range of 1 to 1000 μm, measured by light microscope; b) applying a second aqueous cleansing composition onto the scalp and the hair and massaging the second aqueous cleansing composition into the scalp and the hair; c) rinsing the hair off; and d) applying a third non-cleansing aqueous aerosol composition onto the scalp and the hair, massaging the third non-cleansing aqueous aerosol composition into the scalp and the hair, and optionally rinsing the third non-cleansing aqueous aerosol composition off the scalp and the hair, the third non-cleansing aqueous aerosol composition comprising carbon dioxide as a propellant.

2. The process of claim 1, wherein the average particle size of the dispersed particles is in the range of 5 μm to 500 μm, measured by light microscopy.

3. The process of claim 1, wherein the first aqueous non-cleansing composition further comprises one or more dispersed particles selected from cellulose particles, particles of jojoba esters, particles being produced of one or more hydrophobic compounds having a melting point above 25° C. and at least one mixture thereof.

4. The process of claim 1, wherein a total concentration of dispersed particles in the first aqueous non-cleansing composition is in the range of 0.5 to 15% by weight, calculated to a total weight of the first aqueous non-cleansing composition.

5. The process according of claim 1, wherein the first aqueous non-cleansing composition comprises one or more thickening polymer(s), at a concentration in the range of 0.1 to 5% by weight, calculated to a total weight of the first aqueous non-cleansing composition.

6. The process of claim 1, wherein the second aqueous cleansing composition comprises one or more cleansing surfactants selected from anionic surfactants, zwitterionic/amphoteric surfactants, and non-ionic surfactants.

7. The process of claim 1, wherein a total concentration of one or more cleansing surfactants is in the range of 5 to 50% by weight, calculated to a total weight of the second aqueous cleansing composition.

8. The process of claim 1, wherein the third non-cleansing aqueous aerosol composition comprises carbon dioxide at a concentration in the range of 0.5 to 10% by weight, calculated to a total weight of the third non-cleansing aqueous aerosol composition.

9. The process of claim 1, wherein the third non-cleansing aqueous aerosol composition comprises one or more silicone compounds, having a viscosity in the range of 1 mPas to 1,000 mPas, measured with a Brookfield viscometer at 60 rpm with rotor number 1 at 25° C. under atmospheric conditions.

10. The process of claim 9, wherein the third non-cleansing aqueous aerosol composition further comprises one or more polyol, at a concentration in the range of 1% to 15% by weight, calculated to a total weight of the third non-cleansing aqueous aerosol composition.

11. The process of claim 10, wherein the third non-cleansing aqueous aerosol further comprises one or more thickening polymer selected from associative thickening polymers.

12. The process of claim 1, wherein the pH of at least one of the first non-cleansing aqueous composition, the second aqueous cleansing composition, and the third non-cleansing aqueous aerosol composition is in the range of 3 to 8.

13. The process of claim 1, wherein the third non-cleansing aqueous aerosol composition comprises one or more non-ionic surfactants, having a total concentration of surfactants in the range of 0.1% to 2.5% by weight, calculated to a total weight of the third non-cleansing aqueous aerosol composition.

14. (canceled)

15. A kit-of-parts comprising: individually packaged compositions comprising the first non-cleansing aqueous composition, the second aqueous cleansing composition, and the third non-cleansing aqueous aerosol composition according to claim 1.

16. The process of claim 1, further comprising at least one of: e) applying a hair conditioning composition; and f) rinsing the hair off and drying.

17. The process of claim 2, wherein the average particle size of the dispersed particles is in the range of 50 μm to 400 μm, measured by light microscopy.

18. The process of claim 4, wherein the total concentration of dispersed particles in the first aqueous non-cleansing is in the range of 2 to 8% by weight, calculated to the total weight of the first aqueous non-cleansing composition.

19. The process of claim 1, wherein a total concentration of carbon dioxide in the third non-cleansing aqueous aerosol composition is in the range of 0.5 to 10% by weight, calculated to a total weigh of the third non-cleansing aqueous aerosol composition.

20. The process of claim 19, wherein the total concentration of carbon dioxide in the third non-cleansing aqueous aerosol composition is in the range of 1 to 5% by weight, calculated to the total of the third non-cleansing aqueous aerosol composition.

21. The process of claim 19, wherein the third non-cleansing aqueous aerosol composition is confectioned as an aerosol product comprising carbon dioxide as the sole propellant of the aerosol product.

Description

EXAMPLE 1

[0060]

TABLE-US-00001 First Composition (A) % by weight Cellulose scrub 3.0 Jojoba esters scrub 3.0 PEG-6 Caprylic/Capric triglycerides 3.0 Acrylates/C10-30 Alkyl acrylate crosspolymer 1.0 Ethanol 15.0 Sodium hydroxide q.s. to pH 6.0 Water q.s. to 10

TABLE-US-00002 Second Composition (B) % by weight Sodium laureth sulphate 10.0 Cocamidopropyl betaine 5.0 Coco glucoside 5.0 PEG-18 Glyceryl cocoate/oleate 1.0 Polyquaternium-10 1.0 Sodium hydroxide/Citric acid q.s. to pH 5.5 Water to 100

TABLE-US-00003 Third Composition (C) % by weight Dipropylene Glycol 4.0 Dimethicone 50 CSt 4.0 Carbon Dioxide 3.0 Propanediol 2.0 PEG-60 Hydrogenated Castor Oil 1.0 Acrylates/C10-30 Alkyl Acrylate 0.5 crosspolymer Sodium hydroxide q.s. to pH 5.5 Water q.s. to 100

[0061] With the above 3 compositions human skin was treated as follows: The composition A was applied in the first step at a concentration 1 g/cm.sup.2 and massaged onto skin for 30 seconds. Afterwards the area was applied the Composition B, the cleansing composition, and massaged for 30 sec and rinsed off with water. Finally, the Composition C was applied at a concentration 1 g/cm.sup.2 and massaged for 2 min and rinsed off with water.

[0062] Before application of the first composition A, after rinsing off the cleansing composition B and after rinsing off the Composition C photos were taken and the red color as dimension for stimulated blood circulation was evaluated.

[0063] Durability of the enhanced blood circulation was measured. Therefore, 15 panelists were treated by the above mentioned method and time was determined until the skin color returns to its usual appearance.

[0064] Analysis: Photos were analyzed with ImageJ after Optical Density Calibration. For comparison the color channels were split and the respective green channel was used for analysis of the increased red color (=increased blood circulation) of skin. The modal grey values (most frequently occurring gray value within the selection) of skin areas, where the products were applied, were measured and the difference before and after the topical application were calculated.

[0065] For the panelist the average time of the red appearance of skin was calculated for the respective products.

[0066] Following results were obtained:

TABLE-US-00004 Red colour difference Treatment before and after Composition B 0.016 Compositions A and B 0.029 Compositions B and C 0.045 Compsitions A, B and C 0.051

TABLE-US-00005 Treatment Duration of Red colour in s Composition B 2 Compositions A and B 7 Compositions B and C 19 Compositions A, B and C 28

[0067] From the above results it is beyond any doubt that the process according to the present invention shows unexpectedly the highest enhancement of the blood circulation of human skin as measured by redness evaluation.