Composition comprising baicalin and a particular acrylic polymer

Abstract

The present application relates to a composition for topical application comprising baicalin and/or at least one derivative thereof or an extract containing same, and at least one acrylic polymer, and to the use of said composition in the cosmetics and dermatology fields and in particular for caring for, for the hygiene of, for protecting and/or for making up bodily or facial skin, or for hair care, preferably for caring for bodily or facial skin. A subject of the invention is also a process for the cosmetic treatment of keratin materials, which consists in applying to the keratin materials a composition as defined above, and also the use of said composition in the cosmetics or dermatology field, and in particular for caring for, protecting and/or making up bodily or facial skin, or for hair care, preferably for caring for bodily or facial skin.

Claims

1. A composition comprising: a) from 0.01% to 10% by weight based upon the total weight of the composition of baicalin and/or at least one derivative thereof or a plant extract comprising baicalin and/or at least one derivative thereof; and b) between 0.1% and 10% by weight based upon the total weight of the composition of one or more polymers comprising monomer units of formulae (A) and (B): ##STR00005## in which: R.sub.1, independently of one another, is chosen from alkyl or alkylene radicals, and at least 60% by weight of the R.sub.1 groups are behenyl radicals, the percentage by weight relating to the sum of all the R.sub.1 groups present in the polymer, and the weight ratio of the sum of all the hydroxyethyl acrylate units to the sum of all the acrylate units bearing the R.sub.1 group ranges from 1:30 to 1:1; and the sum of the total of units A and B is at least 95% by weight of the total weight of the polymer, the polymer having a number-average molecular weight Mn ranging from 2000 to 9000 g/mol.

2. The composition according to claim 1, in which the baicalin and derivatives thereof are chosen from the compounds of formula (I): ##STR00006## in which: each X.sub.1, X.sub.2, X.sub.3, X.sub.4, X.sub.5, X.sub.a, X.sub.b, X.sub.c, X.sub.d, X.sub.e and X.sub.f, independently denotes O or S; each Y.sub.1, Y.sub.2, Y.sub.3, Y.sub.4, Y.sub.6 independently denotes H or a (C.sub.1-C.sub.10)alkyl radical; each R.sub.4, R.sub.5, R.sub.a, R.sub.b and R.sub.c, independently denotes H, a (C.sub.1-C.sub.10)alkyl radical optionally substituted with 1 to 5 groups R.sub.y, or a (C.sub.1-C.sub.10)alkyl-O—(C.sub.1-C.sub.10)alkyl radical, each (C.sub.1-C.sub.10)alkyl radical possibly being substituted with 1 to 5 groups R.sub.y; each R.sub.y, independently denotes R.sub.q or a —(C.sub.2-C.sub.10)alkenyl, —(C.sub.2-C.sub.10)alkynyl, —(C.sub.3-C.sub.10)cycloalkyl, —(C.sub.8-C.sub.14)bicycloalkyl, —(C.sub.8-C.sub.14)tricycloalkyl, —(C.sub.5-C.sub.10)cycloalkenyl, —(C.sub.8-C.sub.14)tricycloalkenyl, phenyl, naphthyl, —(C.sub.14)aryl radical, each possibly being substituted with one or more radicals R.sub.z; each R.sub.1, R.sub.2, R.sub.3, independently denotes R.sub.q or a —(C.sub.2-C.sub.10)alkenyl, —(C.sub.2-C.sub.10)alkynyl, —(C.sub.3-C.sub.10)cycloalkyl, —(C.sub.8-C.sub.14)bicycloalkyl, —(C.sub.8-C.sub.14)tricycloalkyl, —(C.sub.5-C.sub.10)cycloalkenyl, —(C.sub.8-C.sub.14)tricycloalkenyl, phenyl, naphthyl, —(C.sub.14)aryl radical, each possibly being substituted with one or more radicals R.sub.z; Rf is H, (C.sub.1-C.sub.12) alkyl optionally substituted with 1 to 5 radicals R.sub.y, (C.sub.1-C.sub.12)alkyl-O—(C.sub.1-C.sub.12)alkyl, each (C.sub.1-C.sub.12)alkyl radical possibly being substituted with 1 to 5 groups R.sub.y; each R.sub.q, independently is CN, OH, halogen, N.sub.3, NO.sub.2, N(R.sub.z).sub.2, ═NR.sub.z, CH═NR.sub.z, NR.sub.zOH, OR.sub.z, COR.sub.z, C(O)R.sub.z, O(CO)OR.sub.z, SR.sub.z, S(O)R.sub.z or S(O).sub.2R.sub.z; each R.sub.z, independently is —(C.sub.1-C.sub.6)alkyl, —(C.sub.2-C.sub.6)alkenyl, —(C.sub.3-C.sub.8)cycloalkyl, —(C.sub.3-C.sub.8)cycloalkenyl, phenyl, a heterocycle having 3 to 5 branches, CH(halo).sub.2 or C(halo).sub.3; and n is 0, 1, 2, 3, 4 or 5; and the salts thereof, the optical isomers thereof and the diastereoisomers thereof.

3. The composition according to claim 1, comprising the baicalin corresponding to general formula (II) below: ##STR00007##

4. The composition according to claim 1, in which the baicalin and/or derivatives thereof are present in active material concentrations ranging from 0.02% to 8% by weight relative to the total weight of the composition.

5. The composition according to claim 1, in which, in the polymer b), R.sub.1 is constituted of alkyl radicals.

6. The composition according to claim 1, in which, in the polymer b), at least 70% by weight of the R.sub.1 groups are behenyl radicals.

7. The composition according to claim 1, in which, in the polymer b), all the R.sub.1 groups are behenyl radicals.

8. The composition according to claim 1, in which, in the polymer b), the weight ratio of the sum of all the hydroxyethyl acrylate units to the sum of all the acrylate units bearing the R.sub.1 group ranges from 1:15 to 1:1.

9. The composition according to claim 1, in which the polymer units present in the polymer b) are constituted of the units (A) and (B).

10. The composition according to claim 1, in which the polymer b) has a number-average molecular weight Mn ranging from 5000 to 9000 g/mol.

11. The composition according to claim 1, in which the polymer b) has a melting point ranging from 60° C. to 69° C.

12. The composition according to claim 1, in which the active material concentration of said polymer(s) b) is between 0.5% and 8% by weight relative to the total weight of the composition.

13. The composition according to claim 1, also comprising at least one UV-screening agent.

14. The composition according to claim 1, in the form of an oil-in-water or water-in-oil, emulsion or in the form of a gel.

15. The composition according to claim 1, in which the pH is between 5.1 and 5.9.

16. The composition-according to claim 2, in which the baicalin and/or derivatives thereof are present in active material concentrations ranging from 0.01% to 10% by weight relative to the total weight of the composition.

17. The composition according to claim 1, being in the form of an oil-in-water emulsion, having a pH between 5.1 and 5.9, and wherein the baicalin and/or derivatives thereof are present in active material concentrations ranging from 0.02% to 8% by weight, relative to the total weight of the composition; the active material concentration of the polymer(s) b) is between 0.5% and 8% by weight relative to the total weight of the composition, wherein the baicalin and derivatives thereof are chosen from the compounds of formula (I): ##STR00008## in which: each X.sub.1, X.sub.2, X.sub.3, X.sub.4, X.sub.5, X.sub.a, X.sub.b, X.sub.c, X.sub.d, X.sub.e and X.sub.f, independently denotes O or S; each Y.sub.1, Y.sub.2, Y.sub.3, Y.sub.4, Y.sub.6 independently denotes H or a (C.sub.1-C.sub.10)alkyl radical; each R.sub.4, R.sub.5, R.sub.a, R.sub.b and R.sub.c, independently denotes H, a (C.sub.1-C.sub.10)alkyl radical optionally substituted with 1 to 5 groups R.sub.y, or a (C.sub.1-C.sub.10)alkyl-O—(C.sub.1-C.sub.10)alkyl radical, each (C.sub.1-C.sub.10)alkyl radical possibly being substituted with 1 to 5 groups R.sub.y; each R.sub.y, independently denotes R.sub.q or a —(C.sub.2-C.sub.10)alkenyl, —(C.sub.2-C.sub.10)alkynyl, —(C.sub.3-C.sub.10)cycloalkyl, —(C.sub.8-C.sub.14)bicycloalkyl, —(C.sub.8-C.sub.14)tricycloalkyl, —(C.sub.5-C.sub.10)cycloalkenyl, —(C.sub.8-C.sub.14)tricycloalkenyl, phenyl, naphthyl, —(C.sub.14)aryl radical, each possibly being substituted with one or more radicals R.sub.z; each R.sub.1, R.sub.2, R.sub.3, independently denotes R.sub.q or a —(C.sub.2-C.sub.10)alkenyl, —(C.sub.2-C.sub.10)alkynyl, —(C.sub.3-C.sub.10)cycloalkyl, —(C.sub.8-C.sub.14)bicycloalkyl, —(C.sub.8-C.sub.14)tricycloalkyl, —(C.sub.5-C.sub.10)cycloalkenyl, —(C.sub.8-C.sub.14)tricycloalkenyl, phenyl, naphthyl, —(C.sub.14)aryl radical, each possibly being substituted with one or more radicals R.sub.z; Rf is H, (C.sub.1-C.sub.12) alkyl optionally substituted with 1 to 5 radicals R.sub.y, (C.sub.1-C.sub.12)alkyl-O—(C.sub.1-C.sub.12)alkyl, each (C.sub.1-C.sub.12)alkyl radical possibly being substituted with 1 to 5 groups R.sub.y; each R.sub.q, independently is CN, OH, halogen, N.sub.3, NO.sub.2, N(R.sub.z).sub.2, ═NR.sub.z, CH═NR.sub.z, NR.sub.zOH, OR.sub.z, COR.sub.z, C(O)R.sub.z, O(CO)OR.sub.z, SR.sub.z, S(O)R.sub.z or S(O).sub.2R.sub.z; each R.sub.z, independently is —(C.sub.1-C.sub.6)alkyl, —(C.sub.2-C.sub.6)alkenyl, —(C.sub.3-C.sub.8)cycloalkyl, —(C.sub.3-C.sub.8)cycloalkenyl, phenyl, a heterocycle having 3 to 5 branches, CH(halo).sub.2 or C(halo).sub.3; and n is 0, 1, 2, 3, 4 or 5; and the salts thereof, the optical isomers thereof and the diastereoisomers thereof and the polymer b) has a melting point ranging from 60° C. to 69° C.

Description

EXAMPLES

Example of Preparation of Polymer 1

(1) Determination of the molecular weight by gel permeation chromatography (GPC):

(2) The sample is prepared by preparing a solution of the polymer at 10 mg/ml in tetrahydrofuran. The sample is placed in an oven at 54° C. for 10 minutes and then in an oscillating shaker for 60 minutes to aid dissolution. After visual inspection, the sample appears to be totally dissolved in the solvent.

(3) The sample prepared was analysed using two polypore 300×7.5 mm columns (manufactured by Agilent Technologies), a Waters 2695 chromatographic system, a tetrahydrofuran mobile phase and detection by refractive index. The sample was filtered through a 0.45 μm nylon filter, before being injected into the liquid chromatograph. The standards used for the calibration are the Easi Vial narrow polystyrene (PS) standards from Agilent Technologies.

(4) Polystyrene standards ranging from 2 520 000 to 162 daltons were used for the calibration.

(5) The system is equipped with a PSS SECcurity 1260 RI detector. The polystyrene calibration curve was used to determine the average molecular weight. The recording of the diagrams and the determination of the various molecular weights were performed by the Win GPC Unichrom 81 program.

(6) Determination of the melting point by differential scanning calorimetry (or DSC):

(7) This method describes the general procedure for determining the melting point of polymers by differential scanning calorimetry. This method is based on the standards ASTM E791 and ASTM D 34182 and the DSC calibration is performed according to standard ASTM E 9672.

(8) Behenyl Acrylate/2-Hydroxyethyl Acrylate Copolymer (Polymer 1):

(9) In a 4-necked flask equipped with a side-blade mixer, an internal thermometer, two funnels, a reflux condenser, and an extension for two other necks, 175 g of behenyl acrylate, 25 g of 2-hydroxyethyl acrylate and 0.4 g of 2,2′-azobis(2-methylbutyronitrile) (Akzo Nobel) were added, over the course of 60 minutes at 80° C., to 40 g of isopropanol, with stirring, after having removed the oxygen from the system by means of a nitrogen flush for 20 minutes. The mixture was stirred at 80° C. for 3 hours. The solvent was then eliminated by vacuum distillation, then 1 g of dilauryl peroxide was added and the reaction was continued for 60 minutes at 110° C. The step was repeated. The mixture was then cooled to 90° C., a stream of demineralized water was added and the mixture was then stirred. The water was removed by vacuum distillation.

(10) Molecular weight: Mn=7300 g/mol, Mw=21 000, Mw/Mn=2.8

(11) Melting point: 65° C.

(12) In the examples which follow, for each composition, the viscosity was measured, the stability over time at two months at 45° C. was observed, and then the sensory aspect was evaluated during and after the application of said composition to the skin. For each composition comprising a UV-screening agent, the in vitro SPF value was also measured.

(13) Viscosity Measurement

(14) The viscosity measurement is generally carried out at 25° C., using a Rheomat RM180® viscometer equipped with a No. 3 spindle, the measurement being carried out after 10 minutes of rotation of the spindle in the composition (after which time stabilization of the viscosity and of the speed of rotation of the spindle are observed), at a shear rate of 200 s.sup.−1.

(15) Protocol for Evaluating the Tack

(16) The tack is evaluated by a panel of sensory experts made up of 10 individuals. Each composition is applied to the forearm at a dose of 2 mg/cm.sup.2. The product was spread by circular movements until it had penetrated (approximately 30 seconds). The tack is evaluated after 2 minutes of drying, by applying the back of the hand to the treated area, according to a scale ranging from 1 to 15 in which 1 constitutes a very tacky reference and 15 constitutes a non-tacky reference.

(17) Yellowing Measurements:

(18) The colour of the formulae was evaluated after preparation of thin films on a contrast card. The formulae are deposited inside a circle 2.2 cm in diameter, and are spread level in order to obtain reproducible deposit thicknesses. The colorimetric measurements are then carried out by means of a Minolta CM2600D spectrocolorimeter at two points of the film. This operation is reproduced twice, which results in 4 experimental values per composition.

(19) The results are expressed in the (L*, a*, b*) system, in which L* represents the luminance, a* represents the red-green axis (−a*=green, +a*=red) and b* represents the yellow-blue axis (−b*=blue, +b*=yellow). Thus, a* and b* express the hue of the compound. The value of chroma (C*) is calculated in the CIE L*a*b* system according to the formula C*=((e){circumflex over ( )}2+(b*){circumflex over ( )}2){circumflex over ( )}0.5.

(20) The higher the value of chroma C*, the more marked is the intensity of the colour of the product.

(21) In vitro SPF

(22) The sun protection factor (SPF) is determined according to the “in vitro” method described by B. L. Diffey in J. Soc. Cosmet. Chem. 40, 127-133, (1989). The measurements were taken by means of a UV-2000S spectrophotometer from the company Labsphere. Each composition is applied to a rough plate of PMMA, in the form of a uniform and even deposit in a proportion of 1.3 mg/cm.sup.2.

Examples 1 to 3: Compositions in O/W Emulsion Form

(23) The following compositions were prepared.

(24) TABLE-US-00001 1 2 3 Phases Composition (% by weight) (invention) (comparative) (comparative) A1 WATER qs 100 qs 100 qs 100 A1 EDTA 0.1 0.1 0.1 A1 GLYCEROL 5 5 5 A2 WATER 8 8 8 A2 SCUTELLARIA BAICALENSIS 0.25 0.25 0.25 EXTRACT (BAICALIN 95 MM sold by MMP) A2 TRIETHANOLAMINE 0.17 0.17 0.17 B Polymer 1 2 — B Polystearyl acrylate (INTELIMER 2 IPA 13-1 from AIR PRODUCT) B DICAPRYLYL CARBONATE 5 5 5 (CETIOL CC from COGNIS) B ISONONYL ISONONANOATE 2.5 2.5 2.5 B DIMETHICONE (Viscosity: 5 cSt) 5 5 5 B GLYCERYL STEARATE (and) 2 2 2 PEG-100 STEARATE (ARLACEL 165 from CRODA) B CETYL ALCOHOL 1 1 1 B BUTYL 2 2 2 METHOXYDIBENZOYLMETHANE B OCTOCRYLENE 6 6 6 B PARAFFIN WAX (SASOLWAX 0.5 0.5 0.5 5603 from SASOL) B VITAMIN E 1 1 1 C AMMONIUM 1.23 AM 1.23 AM 1.23 AM ACRYLOYLDIMETHYLTAURATE/ VP COPOLYMER (95% AM) (ARISTOFLEX AVC from CLARIANT) D TALC 2 2 2 E CITRIC ACID at 5% in water qs pH = 5.5 ± 0.3 pH = 5.5 ± 0.3
Preparation of the Compositions

(25) The starting materials are first weighed out carefully using a balance (precision=0.01 g).

(26) The components of phase A1 are heated to 70° C. using a hotplate, and are mixed using a Rayneri blender.

(27) Phase A2 is then introduced into phase A1 at 70° C. with stirring using a Rayneri blender, until a homogeneous clear mixture is obtained.

(28) Phase B is heated to 70° C., then introduced into phase A1+A2. The emulsification is carried out at 70° C. using a rotor-stator of Moritz type. After 10 minutes of emulsion, the preparation is brought back to ambient temperature.

(29) Phase C is introduced into the emulsion obtained, with Rayneri stirring at ambient temperature.

(30) Phase D is introduced into the preparation.

(31) The pH is adjusted at the end of formulation using 5% citric acid in water constituting phase E, to pH=5.5±0.3.

(32) The following results were obtained:

(33) TABLE-US-00002 1 (invention) 2 3 Viscosity 14.8 P 12.8 P 10.2 P Stability after 2 months at YES YES YES 45° C. in vitro SPF 11.2 ± 0.8  8.4 ± 0.8 6.1 ± 0.5 Mattness (Score by sensory 10.1 ± 1.4  4.8 ± 0.6 2.1 ± 0.2 expert panel, out of 15; 1 = Shiny; 15 = Non-shiny) Tack (Score by sensory 10.8 ± 1.1  5.0 ± 0.9 4.9 ± 1   expert panel, out of 15; 1 = Very tacky; 15 = Non-tacky) Non-greasy finish (Score by 9.1 ± 1.9 8.1 ± 1.9 5.1 ± 1.1 sensory expert panel, out of 15; 1 = Greasy finish; 15 = Non-greasy finish) Colorimetric L* 91.4 92.1 91.6 evaluation of a* −1.2 −4.9 −4.8 the b* 3.6 9.8 10.4 compositions C* 3.8 11 11.5 Colour Pale yellow Very yellow Very yellow

(34) As demonstrated by the results of Compositions 2 and 3 (comparative compositions), a formula comprising baicalin and a lipophilic polymer outside the invention has a very strong yellow colouration and leads to high shininess and a greasy finish.

(35) Conversely, Composition 1 (invention) with a polymer according to the invention is less yellow and provides a matt and non-greasy finish.

Examples 4 and 5

(36) The following compositions according to the invention were prepared.

(37) TABLE-US-00003 4 5 Phases Composition (% by weight) (invention) (invention) A1 WATER qs 100 qs 100 A1 EDTA 0.1 0.1 A1 GLYCEROL 5 5 A2 WATER 8 8 A2 SCUTELLARIA BAICALENSIS 0.25 1 EXTRACT (BAICALIN 95 MM sold by MMP) A2 TRIETHANOLAMINE 0.17 0.17 A3 ACRYLATES COPOLYMER 0.6 AM 0.6 AM (CARBOPOL AQUA SF1 POLYMER from LUBRIZOL) (30% AM) A3 TRIETHANOLAMINE 0.25 0.25 A3 WATER 5 5 B Polymer 1 4 4 B DICAPRYLYL CARBONATE 5 5 (CETIOL CC from COGNIS) B ISONONYL ISONONANOATE 2.5 2.5 B DIMETHICONE (Viscosity: 5 cSt) 5 5 B GLYCERYL STEARATE (and) 2 2 PEG-100 STEARATE (ARLACEL 165 from CRODA) B CETYL ALCOHOL 1 1 B BUTYL 2 2 M ETHOXYDI BENZOYLMETHANE B OCTOCRYLENE 6 6 B PARAFFIN WAX (SASOLWAX 0.5 0.5 5603 from SASOL) B VITAMIN E 1 1 C AMMONIUM 1.23 AM 1.23 AM ACRYLOYLDIMETHYLTAURATE/ VP COPOLYMER (95% AM) (ARISTOFLEX AVC from CLARIANT) D TALC 2 2 E CITRIC ACID at 5% in water qs pH qs pH 5.5 ± 0.3 5.5 ± 0.3
Preparation of the Compositions

(38) The starting materials are first weighed out carefully using a balance (precision=0.01 g).

(39) The components of phase A1 are heated to 70° C. using a hotplate, and are mixed using a Rayneri blender.

(40) The polymer of phase A2 is then introduced into phase A1 at 70° C. with stirring using a Rayneri blender, until a homogeneous clear mixture is obtained.

(41) Phase A3 is then introduced into phase A1+A2 at 70° C.

(42) Phase B is heated to 70° C., then introduced into phase A1+A2+A3. The emulsification is carried out at 70° C. using a rotor-stator of Moritz type. After 10 minutes of emulsion, the preparation is brought back to ambient temperature.

(43) Phase C is introduced into the emulsion A1+A2+A3+B, with Rayneri stirring at ambient temperature.

(44) Phase D is introduced into the preparation.

(45) The pH is adjusted at the end of formulation using 5% citric acid in water constituting phase E, to pH=5.5±0.3.

(46) The following results were obtained:

(47) TABLE-US-00004 4 5 Visco 12.1 P 5.8 P Stability after 2 months at YES YES 45° C. in vitro SPF 10.1 ± 1.2 10.2 ± 0.8 Mattness (Score by sensory 11.5 ± 1.6 11.5 ± 1.6 expert panel, out of 15; 1 = Shiny; 15 = Non-shiny) Tack (Score by sensory 13.5 ± 1.2 13.1 ± 2.1 expert panel, out of 15; 1 = Very tacky; 15 = Non-tacky) Non-greasy finish (Score by 10.1 ± 1.3 11.8 ± 0.3 sensory expert panel, out of 15; 1 = Greasy finish; 15 = Non-greasy finish) Colorimetric L* 90.8 92.2 evaluation of a* −1 −2.4 the b* 2.7 5.1 compositions C* 2.9 5.6 Colour Pale yellow Pale yellow

(48) The compositions are stable and have a pale yellow colour. Applied to the skin, they provide a matt and non-greasy finish.

Examples 7-9: Compositions in O/W Emulsion Form

(49) The following compositions according to the invention were prepared.

(50) TABLE-US-00005 7 8 9 Phases Composition (% by weight) invention invention invention A1 WATER qs 100 qs 100 qs 100 A1 PHENOXYETHANOL 0.5 0.5 0.5 A1 EDTA 0.1 0.1 0.1 A1 GLYCEROL 5 5 5 A2 WATER 8 8 8 A2 SCUTELLARIA 0.25 0.25 0.25 BAICALENSIS EXTRACT (BAICALIN 95 MM sold by MMP) A2 TRIETHANOLAMINE 0.17 0.17 0.17 A3 ACRYLATES COPOLYMER 0.6 AM (CARBOPOL AQUA SF1 POLYMER from LUBRIZOL) (30% AM) A3 TRIETHANOLAMINE 0.25 A3 WATER 5 B Polymer 1 2 2 4 B DICAPRYLYL CARBONATE 15 15 15 (CETIOL CC from COGNIS) B ISONONYL 2.5 2.5 2.5 ISONONANOATE B DIMETHICONE (Viscosity: 5 cSt) 3 3 3 B GLYCERYL STEARATE 2 (and) PEG-100 STEARATE (ARLACEL 165 from CRODA) B CETYL ALCOHOL 1 B POTASSIUM CETYL 2 PHOSPHATE (AMPHISOL K from DSM) B PARAFFIN WAX 0.5 0.5 0.5 (SASOLWAX 5603 from SASOL) B VITAMIN E 1 1 1 C AMMONIUM 1.23 AM 1.23 AM 0.475 AM ACRYLOYLDIMETHYLTAURATE/ VP COPOLYMER (95% AM) (ARISTOFLEX AVC from CLARIANT) D TALC 2 2 2 E CITRIC ACID at 5% in water qs pH 5.5 ± 0.3 qs pH 5.5 ± 0.3 qs pH 5.5 ± 0.3
Preparation of the Compositions

(51) The starting materials are first weighed out carefully using a balance (precision=0.01 g).

(52) The components of phase A1 are heated to 70° C. using a hotplate, and are mixed using a Rayneri blender.

(53) The polymer of phase A2 is then introduced into phase A1 at 70° C. with stirring using a Rayneri blender, until a homogeneous clear mixture is obtained.

(54) Phase A3 is then introduced into phase A1+A2 at 70° C.

(55) Phase B is heated to 70° C., then introduced into phase A1+A2+A3. The emulsification is carried out at 70° C. using a rotor-stator of Moritz type. After 10 minutes of emulsion, the preparation is brought back to ambient temperature.

(56) Phase C is introduced into the emulsion A1+A2+A3+B, with Rayneri stirring at ambient temperature.

(57) Phase D is introduced into the preparation.

(58) The pH is adjusted at the end of formulation using 5% citric acid in water constituting phase E, to pH=5.5±0.3.

(59) The compositions are stable and have a pale yellow colour. Applied to the skin, they provide a matt and non-greasy finish.