WO2013131576A1

WO2013131576A1 - Foamable bleaching compositions comprising a thermo-sensitive polymer

Info

Publication number: WO2013131576A1
Application number: PCT/EP2012/054090
Authority: WO
Inventors: Otto Goettel; Johann Aeby; Alberto FINAZZI
Original assignee: Alfaparf Group S.P.A.
Priority date: 2012-03-09
Filing date: 2012-03-09
Publication date: 2013-09-12

Abstract

The present invention relates to a foamable composition for bleaching human hair which after application to the head transforms into a transparent drip-free gel. The foamable composition according to the invention is water-based and comprises at least one thermo-sensitive polymer, at least one tenside, at least one persulfate salt, at least one alkalizer or alkaline reacting salt, hydrogen peroxide or a hydrogen peroxide salt or adduct. The foamable composition may be in the form of a ready-to-use composition or it may be obtained from a kit to be assembled before use.

Description

FQAMABLE BLEACHING COMPOSITIONS COMPRISING A

THERMO-SENSITIVE POLYMER Technical field of the invention

The present invention relates to a foamable composition for bleaching human hair which after application to the head transforms into a transparent drip-free gel.

Background of the invention

Traditional bleaching or blonding compositions for human hair include at least one solid peroxo salt, especially a persulfate salt, and a powdery carrier material.

Persulfate salts are known to have limited stability in the presence of moisture.

Therefore, prior to application onto the hair, the bleach powder is mixed with a solution of hydrogen peroxide, preferentially of 6 to 18% strength.

Commonly used peroxo salts are for instance potassium and ammonium persulfates as well as magnesium peroxide.

Further powder components are silica (diatomaceous earth), silicium dioxide, aluminum silicate, sodium metasilicate and magnesium carbonate.

In order to localize the bleaching product being applied to the hair so that it does not run onto the face or outside the areas that it is intended to bleach, use has been made hitherto of conventional thickeners such as crosslinked polyacrylic acid, hydroxyethylcelluloses, certain polyurethanes and waxes, and also, in the case of aqueous bleaching compositions, of mixtures of nonionic surfactants with an HLB (Hydrophilic-Lipophilic Balance) value, which, when suitably selected, generate the gelling effect when they are diluted with water and/or surfactants.

Examples for bleach and decolorizing compositions are disclosed in the standard literature, e.g. K. Schrader, "Grundlagen und Rezepturen der Kosmetika", 2^nd edition (1989, Huthig Buchverlag), pp. 815-823.

The use of a conventional bleaching powder, which necessarily comprises a plurality of ingredients, has some disadvantages.

So the ready-to-use mixture has to be prepared by intensively mixing the powder with hydrogen peroxide solution. Hairdressers have often been exposed to dusty powder while preparing the bleach agent. In order to avoid exposure to dusty powder mixtures the market has offered powders which had been sprayed with an oil component to obtain a nearly dust-free powder composition.

Instead of using bleach powder and hydrogen peroxide, pasty two component preparations for making a ready-to-apply pasty preparation for bleaching of human hair have been claimed in DE-OS 38 14 356 and U.S. Pat. 4, 170,637. In these preparations the powdery ingredients are worked into a hydrophobic base, comprising oil and wax, so that a paste results.

In DE-PS 197 23 538 pasty two component preparations were described containing a certain thickener combination. This thickener combination comprises an acrylic acid polymer and at least one polymer made from cellulose, alginate and polysaccharide, at least one mineral oil, at least one liquid, long-chain, hydrophobic fatty acid ester and at least one waxy, long- chain, hydrophobic fatty acid ester and/or synthetic beeswax substitutes.

Alternatively, shakable compositions are also being offered to the market wherein powder compositions consisting of peroxo salts, emulsifiers, waxes and/or oils, thickeners, and various auxiliary agents are mixed either with hydrogen peroxide preparations or simply with water in case the powder composition already contain a source for hydrogen peroxide such as a hydrogen peroxide adduct, an alkali or alkaline earth metal salt of hydrogen peroxide. Immediately after mixing powder and liquid or the two component preparations, respectively, and prior to using the activated composition the mixture is intensively stirred or shaken in order to obtain a homogeneous cosmetic emulsion in the desired quality; the formation of powder agglutination or not well mixed areas has to be avoided which would inevitably lead to blocked nozzles or uneven lightening of hair. However, a visual control of the homogeneity is hardly possible as the mixtures are opaque.

Another practical problem arising from the opacity of traditional bleach compositions is that direct visual control of the hair bleaching progress is impossible. In order to ensure the desired degree of lightening, the bleach has to be removed from a swatch to evaluate if lightening is already sufficient; if this is not yet the case the bleach composition has to be re-applied to the swatch to continue the bleach process until the result is as desired.

This problem was already reported in EP 1732505

(US2007/0151044A1); a transparent gel composition was claimed which should be useful for various applications such as bleach, as oxidizing component of an oxidative hair colorant or as agent for fixing the hair after a reductive permanent waving treatment. The application of the claimed gel is carried out by the traditional way, namely by using a bowl in which the components are mixed with hydrogen peroxide preparations. Due to the highly viscous ready-to-use composition, which may easily contain up to 15 ingredients, a brush is essential for the application. In the patent text it was pointed out that the composition is free of changes in viscosity.

Bleach compositions are also used for instance if customers are not satisfied with their current color or if the coloration of freshly dyed hair was darker than expected. In these cases hairdressers often apply a conventional bleach, dilute it with water and a shampoo and use it as a so-called "bleach wash" or "bleach bath". This technique is also common prior to a coloration to help color stay more vibrant.

It has therefore been our main task to provide an easily applicable bleach composition that, once applied to the head, does not drip off the head; moreover it should allow simple lightening of hair, and should also be useful as color corrector, if customers are not satisfied with a new hair color, and it should be useful as pre-color cleanser prior to dyeing hair.

Traditional bleaches are also known to produce unpleasant ammonia odor. It has therefore also been one of the targets to offer a bleach system free of ammonia and ammonium salts.

Summary of the invention

The present invention relates to a foamable composition for bleaching hair in the form of aqueous solution comprising:

at least one thermo-sensitive polymer,

at least one tenside,

at least one persulfate salt,

at least one alkalizer or alkaline reacting salt,

hydrogen peroxide or alternatively a hydrogen peroxide salt or adduct.

The foamable ready-to-use composition according to the invention may be obtained from a suitably assembled kit.

Detailed description of the invention

Surprisingly, it has now been found that this goal can be reached by applying a foamable composition for bleaching hair in the form of aqueous solution comprising:

at least one thermo-sensitive polymer,

at least one tenside,

at least one persulfate salt, at least one alkalizer or alkaline reacting salt,

hydrogen peroxide or alternatively a hydrogen peroxide salt or adduct.

The composition may optionally comprise auxiliary agents and/or additives, as needed.

According to an embodiment of the current invention, ammonium or sodium persulfate are suitable, whereby ammonium persulfate is preferred for high lift and sodium persulfate is preferred for the preparation of compositions free of ammonia odor. The degree of lightening can also be influenced by the addition of further ammonium salts, such as those used as alkaline reacting agents and auxiliary agents according to the present invention.

The persulfate salts in the ready-to-use composition may be present in amounts from 0.5 to 62% by weight of the composition; preferred are amounts from 0.5 to 25% by weight, more preferred are amounts from 5 to 20% by weight and most preferred are amounts from 2 to 15% by weight.

Thermo- sensitive polymers are able to change their physical state upon a change in temperature; this change preferably occurs in the temperature range between 20 to 80°C.

Useful for the current compositions are such thermo-sensitive polymers which are distinctly soluble in water.

Particularly useful for the current invention are polymers comprising hydrophobic blocks of polypropylene oxide (PPO), hydrophilic blocks of polyethylene oxide (PEO) or both. Such polymers are for instance described in US7339013, which makes explicit reference to this.

Preferably the thermo-sensitive polymer is bis-methoxy PEG- 13

PEG-438/PPG- 1 10 SMDI copolymer (ExpertGel^® EG 56), bis-methoxy PEG- 13 PEG-502/PPG-57/SMDI copolymer (ExpertGel^® EG 230) or a mixture thereof. Especially useful thermo- sensitive polymers may be obtained from PolymerExpert SA, France, and have the trade name ExpertGel^®.

The thermo-sensitive polymers in the ready-to-use composition may be present in amounts from 0.1 to 10% by weight of the composition, preferred are 0.1 to 2.5% by weight, most preferred are amounts from 0.5 to 1.5% by weight.

The tenside may be selected from anionic, neutral, amphoteric or cationic surface -active compounds.

Anionic tensides may be selected from the group consisting of alkylsulfates, alkylethersulfates, alkylsulfonates, alkylarylsulfonates, alkylsuccinates, alkylsulfosuccinates, N-alkoylsarkosinates, acyltaurates, acylisethionates, alkylphosphates, alkyletherphosphates, alkylethercarboxylates, alpha-olefinsulfonates, especially the alkali salts thereof, e.g. sodium, as well as ammonium- and triethanolamine salts.

The alkylethersulfates, alkyletherphosphates and alkylethercarboxylates may comprise between 1 to 10 ethylenoxide or propylenoxide units, preferably 1 to 3 ethylenoxide -units per molecule.

Preferred tensides are sodium lauryl sulfate, ammonium lauryl sulfate, sodium laurylethersulfate, ammonium laurylethersulfate, sodium lauroylsarkosisate, sodiumoleylsuccinate, ammonium laurylsulfosuccinate, sodium dodecylbenzolsulfonate, triethanolamidodecylbenzolsulfonate.

Suitable amphoteric tensides may be alkylbetaines, alkylamidopropylbetaines, alkylsulfobetaines, alkylglycinates, alkylcarboxyglycinates, alkylamphoacetates or propionates, alkylamphodiacetates or dipropionates such as cocodimethyl sulfopropylbetain, laurylbetain, cocamidopropylbetain or sodium cocamphopropionate.

Furthermore, suitable cationic tensides may be for example quaternized ammonium compounds such as cetyltrimethylammonium chloride (INCI: cetrimonium chloride), hydroxyethylcetyldimonium phosphate (INCI: Quaternium-44), Luviquat® Mono LS (INCI: cocotrimoniummethosulfate), poly(oxy- 1,2-ethandiyl), (octadecylnitrilio)tri-2, l-ethandiyl)tris-(hydroxy)- phosphate (INCI: Quaternium-52).

The tensides, useful as foaming agents, may be present in a total amount of at least 0.1% by weight of the total weight of the composition, preferably from 0.1 to 10% by weight of the total composition, more preferably from 1 to 5% by weight of the total composition (calculated as pure compounds).

Suitable alkaline reacting agents may be selected from sodium carbonate, sodium hydrogen carbonate, ammonium carbonate, ammonium hydrogen carbonate, as well as monoethanolamine (MEA), l-amino-2- propanol, 2-amino-2-methyl-propanol (AMP), 2-amino-2-methyl-l,3- propanediol, 2-amino-2-ethyl-l,3-propanediol or tris(hydroxymethyl)- aminomethane (Tromethamine, Tris) as well as heterocyclic compounds such as pyrazole, imidazole, and 1,2,4-triazole, whereby the use of ammonium hydroxide is not explicitly excluded.

Preferred in a ready-to-use mixture is a combination of at least one inorganic alkaline reacting salt with at least one alkanolamine.

The alkaline reacting agents in the ready-to-use compositions may be present in amounts from 0.1 to 10% by weight of the composition, preferred are amounts from 1 to 8% by weight, most preferred are amounts from 3 to 6% by weight.

Auxiliary agents also useful as cutting agents may be for instance sodium chloride, sodium sulfate, trisodium phosphate, sodium acetate, sodium citrate, ammonium citrate, ammonium chloride, or amino acids such as glycine or arginine and salts thereof. The composition according to the invention may also contain one or more additives. The additives may be used in lower amounts, such as stabilizers and complexing agents, and are preferably selected from: phosphoric acid, salicylic acid, 8-hydroxyquinoline, 1 -hy droxy ethane -1, 1- diphosphonic acid, ethylenediamine tetraacetic acid (EDTA), ethylenediamine-N,N'-disuccinic acid (EDDS), and iminodisuccinic acid and the corresponding sodium or ammonium salts thereof as well as pentasodium pentetate, etidronic acid, and disodium pyrophosphate.

A perfume may also be added optionally.

Hydrogen peroxide solutions suitable for the current invention are clear aqueous solutions which may be stabilized as usual. The concentration of hydrogen peroxide may vary in a wide range; preferred are commercially available qualities such as aqueous solutions having 3%, 6%, 9%, or 12% strength.

Besides hydrogen peroxide, it is possible to use a hydrogen peroxide adduct from which hydrogen peroxide is split off, for example a urea- hydrogen peroxide adduct (urea peroxide, carbamide peroxide), a melamine- hydrogen peroxide adduct (melamine-hydrogen peroxide), and an amino acid-hydrogen peroxide adduct typified by a histidine-hydrogen peroxide adduct (histidine peroxide).

Preferably, urea peroxide is used.

The concentration of the compound capable of forming hydrogen peroxide by hydrolysis may range from 0.1% to 25% by weight of the total weight of the composition.

The on-head concentration of hydrogen peroxide preferably should not exceed 6% by weight.

The amount of hydrogen peroxide preferably ranges from 1% to 6% by weight of the composition or the amount of the hydrogen peroxide adduct preferably ranges from 1% to 17% by weight of the composition.

The foamable composition as ready-to-use composition may be obtained from a kit.

When hydrogen peroxide solution is used, the kit may comprise 3 components:

- Composition A: at least one persulfate salt, optionally mixed with one or more solid auxiliary agents;

- Composition B: an aqueous solution of at least one thermo-sensitive polymer, at least one tenside, at least one alkalizer or alkaline reacting salt, and optionally a perfume and auxiliary agents;

- Composition C: an aqueous hydrogen peroxide solution.

The foamable composition is prepared by dissolving composition A in the solution containing the thermo-sensitive polymer (composition B) and then adding to the resulting mixture the composition C or preferably by dissolving the composition A in the hydrogen peroxide solution (composition C) and then adding to the resulting mixture the composition B. The obtained solution is mixed, preferably by rotating movements, to obtain the foamable ready-to-use composition.

When a hydrogen peroxide adduct is used, the kit may comprise 2 components:

Composition D: at least one persulfate salt, at least one hydrogen peroxide adduct and optionally one or more solid auxiliary agents;

Composition E: an aqueous solution of at least one thermo-sensitive polymer, at least one tenside, at least one alkalizer or alkaline reacting salt, and optionally a perfume and at least one auxiliary agent.

The foamable composition is prepared by dissolving composition D in tap water and then adding to the resulting solution the composition E; preferentially the volume of tap water is identical with the volume of composition E. The foamable ready-to-use composition is obtained preferably by rotating movements.

Another type of kit consisting of 2 components comprises:

Composition F: at least one persulfate salt, at least one solid alkaline reacting agent and optionally one or more solid auxiliary agents;

Composition G: an aqueous solution of at least one thermo-sensitive polymer, at least one tenside, hydrogen peroxide and agents which are commonly used for stabilizing hydrogen peroxide solutions. The pH of the composition is acidic, preferably adjusted to 3-4 by the addition phosphoric acid. Optionally a perfume and one or more auxiliary agents to dissolve the perfume can be added.

The foamable ready-to-use composition is obtained by dissolving the powder composition F in the liquid composition G. The amount of the alkaline reacting agent in composition F adjusts the pH of the ready-to-use mixture to the basic range which is essential for the optimum bleach effect.

The pH of the foamable compositions may vary between 7.5 and 1 1, preferably the pH is from 8.5 to 10.

A foamable composition according to the invention is a solution having a viscosity in the range of 15 to 40 cP at 22°C.

The foamable compositions are free of any insoluble materials and are ideal for being applied to the dry hair by a foamer device which can either be a squeeze foamer, a pump foamer or a squeeze foamer for upside-down usage.

Besides the above-mentioned sophisticated foamers, the foam of the composition can also be produced by means of a hair color shaker bowl, preferentially of 300-500 ml volume. Intense shaking of the mixture for approximately 10 to 20 seconds leads to a foam quality which can easily be applied by hand.

Once the foam is applied, hair is massaged best in a circular motion until it is completely saturated in foam.

Immediately after the application the mousse gradually breaks down and forms a colorless gel which does not run from the head. The formed gel is transparent and allows visual control of the lightening process.

The advantage of this composition is to start from an easily foamable liquid which on the head transforms into a viscous gel; in consideration of its consistency such a type of gel would have normally been applicable by brush and bowl technique only.

By the gel formation it is ensured that a maximum of bleach-active ingredients are rapidly in contact with the hair and can diffuse to the fibers to bleach the hair.

The processing time is predominantly depending from the degree of lightening and is from less than one minute up to one hour. Shorter processing times are chosen for minor color corrections or bleach washes whereas extended processing times lead to stronger lightening of the hair. Preferred processing times are from 15 to 45 minutes.

The terms "bleaching" or "blonding," as used according to the present invention, include any level of bleaching, for example, from a slight lightening to stronger blonding.

The composition according to the invention may be used in cosmetic hair treatments, for example for lightening, brightening or blonding hair, especially naturally pigmented as well as dyed hair, or for removing synthetic pigments from hair, especially from human hair.

The composition may also be used for oxidative treatments in various other application fields where oxidation conditions are required, such as, for example, in permanent hair shaping treatments, pharmaceutical applications, dental technology and cleaning agents.

Normally pure aqueous solutions of useful thermo- sensitive polymers have low viscosity at ambient temperature whereas at slightly increased temperatures, e.g. at approximately 35°C, the viscosity reaches a maximum.

However, the presence of salts and further cosmetic ingredients shifts to lower temperature of gelation; for example at a salt load of 10% of an inorganic salt the gelation temperature may easily be at a range below 15°C. In this case an increase in temperature leads to a decrease in viscosity.

It has surprisingly been found that the composition according to the invention does not exhibit any unfavorable properties in terms of on-head gelation although the system is highly salt-loaded.

Neither the thermo-sensitive polymer nor the high salt load have any adverse impact in the excellent foaming properties or the gelling properties of the composition. Viscosities are in the area of less than 40 cP over a wide temperature range and therefore foaming is easy.

Once the foam is applied to the head, it becomes very creamy. In the course of the transition to the gel, which is unexpectedly accompanied by a strong increase in viscosity, neither in the status of the mousse, nor in the phase of changing the physical form to the gel, nor in the form of the gel dripping off the head was observed. Due to its excellent overall properties the composition of the current invention is not only suitable for full-head applications but also for creative stand techniques without using laborious foil techniques.

EXAMPLES

Color results expressed in L*a*b* values obtained from the following illustrative examples were measured with a Minolta Chromameter CR-200.

In the L*a*b* color space L^* indicates lightness and a^* and b^* are the chromaticity coordinates, a^* and b^* indicate color directions: +a^* is the red direction, -a^* is the green direction, +b^* is the yellow direction, and -b^* is the blue direction. Color differences can be expressed by ΔΕ values, which are defined by the equation:

ΔΕ = [(AL^*)² + (Aa^*)² + (Ab^*)²]^1/2

Viscosity measurements were performed with a Brookfield DV-II Viscometer D 220.

Example 1: Hydrogen peroxide solutions

The recipes of the developer compositions given in Table 1 represent widely used standard compositions (not inventive). The pH of the compositions is 3.

Table 1: Composition of hydrogen peroxide solutions

Formulation

Ingredient Example la Example lb Example lc

Water 91.01 g 82.44 g 65.29 g

Hydrogen peroxide 35% 8.57 g 17.14 g 34.29 g

Disodium pyrophosphate 0.05 g 0.05 g 0.05 g

Sodium stannate 0.10 g 0.10 g 0.10 g

Etidronic acid 0.04 g 0.04 g 0.04 g

Pentasodium pentetate 0.07 g 0.07 g 0.07 g

Phosphoric acid 85% 0.16 g 0.16 g 0.16 g

100.00 g 100.00 g 100.00 g

Developer concentration 3% by weight 6% by weight 12% by weight

Examples 2-10: Bleach compositions and test on naturally pigmented and dyed human hair

Figures indicated in Table 2 for the examples 2- 10 are units of weight unless otherwise stated. Table 2: Bleach mousse compositions and physical characteristics

Formulation Examples

Ingredient 2 3 4 5 6 7 8 9 10

Sodium persulfate 7.20 10.00 3.20 6.26 6.26 3.05 6.26 - 6.00

Ammonium

8.00 persulfate

Urea peroxide - - - 3.65 3.65 7.30 3.65 4.00 -

Sodium chloride 4.80 - 8.80 2.09 2.09 1.65 - - -

Urea - 2.00 - - - - - - -

Glycin - - - - - - 2.09 - -

ExpertGel EG 56 0.48 0.96 0.55 0.48 0.48 0.65 0.22 0.48 1.10

ExpertGel EG 230 - - - - - - 0.26 - -

Tego Betain L730% 4.80 5.45 - 4.80 4.80 4.50 3.62 4.80 6.25

Sodium

laurylethersulfate — — 6.00 — — 0.90 — — — 25%

Plantacare 818 UP - - - - - - 1.18 - -

Sodium

1.20 0.55 0.90 1.20 1.20 0.80 1.20

bicarbonate - -

Ammonium

carbonate - 0.70 - - - - - 1.37 -

Ethanolamine 1.20 0.10 2.20 1.20 1.20 0.60 - 1.20 -

AMP - - - - - - 1.75 - -

Tris - - - - - 1.19 - - 4.00

EDTA 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.07

Perfume 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.12

Water demin. 16.23 16.15 14.26 16.23 16.23 15.27 15.68 16.06 23.43

H202 3%

- 24.00 - - - - - - - (Example la)

H202 6%

24.00 - - 24.00 24.00 - - - - (Example lb)

H202 12%

- - 24.00 - - - - - 19.03 (Example lc)

Tap water - - - - - 24.00 24.00 24.00 -

Total weight 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 pH 9.70 8.72 10.12 9.85 9.53 9.54 9.40 9.31 9.40

Viscosity at 22°C 18 cP 35 cP 28 cP 19 cP 18 cP 25 cP 20 cP 18 cP 37 cP

The mixtures from example 2 to 9 are prepared in a squeeze foamer to produce foam which is applied to hair swatches in a sufficient amount. After processing for 30 minutes at 30°C the hair swatches are rinsed with warm water. Then the hair was dried.

Table 3: Bleach results from naturally pigmented human hair

Bleach results from examples

2 3 4 5 6 7 8 9 10

L*a*b* human L= 33.13 34.03 33.79 33.35 34.13 34.43 33.83 33.94 33.14 hair _a= 7 28 7.09 7.23 7.10 7.01 7.19 7.16 7.20 6.93

7/0, mid-blond, ¾= 12.51 12.33 12.59 12.63 12.20 12.87 12.64 12.64 12.49 untreated

bleached, 30 L= 44.00 50.90 43.17 46.63 50.77 44.73 41.02 51.19 40.85 min, _a= 8.99 11.36 10.02 9.39 10.63 10.07 9.67 12.29 9.80

30°C b= 19.56 26.12 20.38 21.48 24.97 21.40 19.51 27.03 19.50

ΔΕ= 13.07 22.20 12.51 16.12 21.29 13.68 10.26 23.03 10.81

The naturally pigmented hair swatches are bleached by 1-2 tones. Approximately 1 tone correlates with ΔΕ of 10 units and 2 tones correlate with ΔΕ of 20 units.

Table 4: Bleach results from naturally pigmented and dyed human hair

Bleach results from examples

8 9 10

L*a*b* human L= 21.74 21.71 22.01 20.96 21.69 21.96 22.47 21.12 22.30 hair _a= 2.85 2.73 2.77 2.52 2.80 3.47 3.46 2.49 2.44 7/0 mid-blond, 2.83 2.95 3.03 2.72 2.91 3.78 3.94 2.59 2.64 dyed with shade

5/0

L= 26.57 33.44 25.85 29.73 31.38 30.07 29.53 31.12 26.51 bleached, 30 min,

a= 7.39 14.04 5.63 9.89 10.97 9.12 9.84 11.77 9.84 30°C

b= 9.22 17.30 7.27 12.28 14.20 11.58 12.38 14.59 10.15

ΔΕ= 9.21 21.71 6.40 14.92 16.97 12.59 12.72 18.17 11.35

The dyed hair swatches are bleached by 0.5-2 tones. Approximately 1 tone correlates with ΔΕ of 10 units and 2 tones correlate with ΔΕ of 20 units. Example 11: Kit for bleach mousse composition using hydrogen peroxide solution

This example for the preparation of a three component kit refers to Table 2, examples 2-5. Ingredients to form the ready-to-use mixtures are packed as indicated below.

Composition 11.1 is consisting of Table 2, position 1-6. The mixture is solid (powder composition).

Composition 11.2 is consisting of Table 2, position 7-19. The composition gives a clear solution.

Composition 11.3 is consisting of Table 2, position 20, 21 or 22.

Preparation of the ready-to-use composition:

Method a): Composition 11.1 is poured into Composition 11.2 which was placed in a plastic bottle; the content is rotated to gently mix the content until a solution is obtained. Then Composition 11.3 is added and mixing is continued to obtain the ready-to-use bleach agent.

Method b): Composition 11.1 is poured into Composition 1 1.3 which was placed in a plastic bottle; the content is rotated to gently mix the content until a solution is obtained. Then Composition 11.2 is added and mixing is continued to obtain the ready-to-use bleach agent.

Bleach mousse compositions obtained by method a) and method b) are identical.

Example 12: Kit for Bleach mousse composition using a hydrogen peroxide adduct and hydrogen peroxide solution

This example for the preparation of a three component kit refers to Table 2, example 6. Ingredients to form the ready-to-use mixtures are packed as indicated below.

Composition 12.1 is consisting of Table 2, positions 1-6. The mixture is solid (powder mixture). Composition 12.2 is consisting of Table 2, positions 7- 19. The composition gives a clear solution.

Composition 12.3 is consisting of Table 2, position 20, 21 or 22.

Preparation of the ready-to-use composition:

Method a): Composition 12.1 is poured into Composition 12.2 which was placed in a plastic bottle; the content is rotated to gently mix the content until a solution is obtained. Then Composition 12.3 is added and mixing is continued to obtain the ready-to-use bleach agent.

Method b): Composition 12.1 is poured into Composition 12.3 which was placed in a plastic bottle; the content is rotated to gently mix the content until a solution is obtained. Then Composition 12.2 is added and mixing is continued to obtain the ready-to-use bleach agent.

Bleach mousse compositions obtained by method a) and method b) are identical.

Example 13: Kit for Bleach mousse composition using a hydrogen peroxide adduct and water

This example for the preparation of a two component kit refers to Table 2, examples 7-9.

Ingredients to form the ready-to-use mixtures are packed as indicated below.

Composition 13.1 is consisting of Table 2, position 1-6. The mixture is solid (powder mixture).

Composition 13.2 is consisting of Table 2, position 7-19. The composition is a clear solution.

In the current case tap water (Pos. 23 in Table 2) is used instead of

Composition 12.3 of the previous example.

Preparation of the ready-to-use composition:

Method a): Composition 13.1 is poured into Composition 13.2 which was placed in a plastic bottle; the content is rotated to gently mix the content until a solution is obtained. Then water is added and mixing is continued to obtain the ready-to-use bleach agent.

Method b): Composition 13.1 is poured into water which was placed in a plastic bottle; the content is rotated to gently mix the content until a solution is obtained. Then Composition 13.2 is added and mixing is continued to obtain the ready-to-use bleach agent.

Bleach mousse compositions obtained by method a) and method b) are identical.

Example 14: Kit for bleach mousse composition using hydrogen peroxide solution

This example for the preparation of a two component kit refers to Table 2, example 10.

Ingredients to form the ready-to-use mixtures are packed as indicated below.

Composition 14.1 is consisting of Table 2, position 1 and 16. The mixture is solid (powder mixture).

Composition 14.2 is consisting of Table 2, position 7, 9, 17- 19 and 22. The composition is a clear solution.

Preparation of the ready-to-use composition:

Composition 14.1 is poured into Composition 14.2 which was placed in a plastic bottle; the content is rotated to gently mix the content until the ready- to-use bleach agent is obtained as clear solution.

If in the examples 11- 14 the bottle is part of a pump or squeeze foamer, the foamer head is screwed on the bottle. The mousse is formed when the mixture is dispensed though the foaming head. The foam is applied to the hair preferentially by hand.

If the bottle is part of a color shaker, the lid is put on the bottle and shaken intensely for 10 to 20 seconds to produce foam in the bottle. The lid is removed and the foam is applied via hand by spreading the foam portion wise on the hair.

The mousse is evenly distributed and lathered on the hair. After processing for 30 minutes (shorter or longer is possible depending to the desired degree of lightening) or the hair is rinsed with warm water. Optionally a conditioner is applied for 2-3 minutes before rinsing thoroughly with warm water. Then the hair is dried.

Claims

1. A foamable ready-to-use composition for bleaching hair in the form of aqueous solution comprising:

- at least one thermo-sensitive polymer,

at least one tenside,

at least one persulfate salt,

at least one alkalizer or alkaline reacting salt,

hydrogen peroxide or alternatively a hydrogen peroxide salt or adduct.

2. A foamable ready-to-use composition according to claim 1, wherein the thermo-sensitive polymer is soluble in water.

3. A foamable ready-to-use composition according to claim 1 or 2, wherein the thermo-sensitive polymer comprises hydrophobic blocks of polypropylene oxide (PPO), hydrophilic blocks of polyethylene oxide (PEO) or both.

4. A foamable ready-to-use composition according to claims 1-3, wherein the thermo-sensitive polymer is bis-methoxy PEG-13 PEG-438/PPG- 110 SMDI copolymer, bis-methoxy PEG-13 PEG-502/PPG-57/SMDI copolymer or a mixture thereof.

5. A foamable ready-to-use composition according to claims 1-4, wherein the thermo-sensitive polymer ranges from 0.1 to 10% by weight of the composition.

6. A foamable ready-to-use composition according to claims 1-5, wherein the tenside is selected from the group consisting of anionic, neutral, amphoteric or cationic surface-active compounds.

7. A foamable ready-to-use composition according to claim 6, wherein the anionic tenside is selected from the group consisting of alkylsulfates, alkylethersulfates, alkylsulfonates, alkylarylsulfonates, alkyl succinates, alkylsulfosuccinates, N-alkoylsarkosinates, acyltaurates, acylisethionates, alkylphosphates, alkyletherphosphates, alkylethercarboxylates, alpha-olefinsulfonates, especially selected from their alkali salts such as sodium; ammonium and triethanolamine salts.

8. A foamable ready-to-use composition according to claim 7, wherein the alkylethersulfate, alkyletherphosphate and alkylethercarboxylate comprise between 1 to 10 ethylenoxide or propylenoxide units, preferably 1 to 3 ethylenoxide-units per molecule.

9. A foamable ready-to-use composition according to claim 6, wherein the amphoteric tenside is selected from the group consisting of alkylbetaines, alkylamidopropylbetaines, alkylsulfobetaines, alkylglycinates, alkylcarboxyglycinates, alkylamphoacetates or propionates, alkylamphodiacetates or dipropionates such as cocodimethyl sulfopropylbetain, laurylbetain, cocamidopropylbetain or sodium cocamphopropionate.

10. A foamable ready-to-use composition according to claim 6, wherein the cationic tensides are quaternized ammonium compounds selected from the group consisting of cetyltrimethylammonium chloride (INCI: cetrimonium chloride), hydroxyethylcetyldimonium phosphate (INCI: Quaternium-44), Luviquat® Mono LS (INCI: cocotrimoniummethosulfate), poly(oxy-l,2- ethandiyl), (octadecylnitrilio)tri-2, l-ethandiyl)tris-(hydroxy)-phosphate (INCI: Quaternium-52).

11. A foamable ready-to-use composition according to claims 1- 10, wherein the amount of the tenside at least 0.1% by weight of the total weight of the composition.

12. A foamable ready-to-use composition according to claims 1- 11, wherein the persulfate salt is ammonium persulfate or sodium persulfate.

13. A foamable ready-to-use composition according to claims 1- 12, wherein the amount of the persulfate salt ranges from 0.5 to 62% by weight of the composition or from 2 to 15% by weight.

14. A foamable ready-to-use composition according to claims 1- 13, wherein the alkaline reacting salt is selected from the group consisting of sodium carbonate, sodium hydrogen carbonate, ammonium carbonate, ammonium hydrogen carbonate, as well as monoethanolamine (MEA), l-amino-2- propanol, 2-amino-2-methyl-propanol (AMP), 2-amino-2-methyl-l,3- propanediol, 2-amino-2-ethyl- 1,3-propanediol, tris(hydroxymethyl)- aminomethane (Tromethamine, Tris) and heterocyclic compounds such as pyrazole, imidazole, and 1,2,4-triazole.

15. A foamable ready-to-use composition according to claims 1- 14, wherein the amount of the alkaline reacting agents ranges from 0.1 to 10% by weight of the composition.

16. A foamable ready-to-use composition according to claims 1- 15, wherein the amount of hydrogen peroxide ranges from 1% to 6% by weight of the composition or the amount of the hydrogen peroxide adduct ranges from 1% to 17% by weight of the composition.

17. A foamable ready-to-use composition according to claim 1- 16, wherein the hydrogen peroxide adduct is selected from urea peroxide, carbamide peroxide, melamine-hydrogen peroxide, histidine peroxide.

18. A foamable ready-to-use composition according to claims 1- 17, wherein the pH ranges between 7.5 and 1 1.

19. A foamable ready-to-use composition according to claims 1- 18, wherein the viscosity ranges from 15 to 40 cP at 22°C.

20. Use of a thermo- sensitive polymer in a foamable composition for lightening or bleaching hair.