Flexible solid cosmetic composition comprising anionic surfactants and solid particles, and cosmetic treatment process

Abstract

The present invention relates to an aqueous cosmetic composition which is in the form of a flexible solid, comprising: from 25% to 70% by weight of one or more anionic surfactants and one or more types of non-hollow solid particles,
said composition comprising at least one anionic surfactant chosen from acylisethionates, preferably having an acyl group containing from 6 to 30 carbon atoms. Said composition is of preferential use as a composition for cleaning or washing keratin materials, in particular the hair. The invention also relates to a cosmetic treatment process, in particular for caring for, cleaning and/or conditioning keratin materials, using said composition.

Claims

1. An aqueous cosmetic hair composition in flexible solid form, comprising: at least one anionic surfactant wherein at least one anionic surfactant is chosen from acyl isethionates represented by the following formula:
RC(O)OCH.sub.2CH.sub.2SO.sub.3M wherein: RC(O) is an acyl group comprising from 6 to 16 carbon atoms, and M denotes a cosmetically acceptable counterion, at least one type of solid full particles chosen from silicas, clays, pigments, pearlescent agents, or mixtures thereof, wherein the total amount of solid particles ranges from 6.7% to 15% by weight, relative to the total weight of the composition, and water in an amount of 35% to 80% by weight; wherein the total amount of anionic surfactant ranges from 25% to 70% by weight, relative to the total weight of the composition; wherein the total amount of acyl isethionates ranges from 12% to 35% by weight, relative to the total weight of the composition, and wherein the composition has a threshold stress at 25 C. of greater than or equal to about 100 Pa.

2. The composition according to claim 1, wherein the composition has a penetration force at 25 C. of greater than or equal to about 210 g.

3. The composition according to claim 1, wherein the composition has a viscoelastic spectrum at 25 C., measured between 10.sup.2 Hz and 100 Hz, such that there is no crossover point between the curves G and G, G always being strictly greater than G.

4. The composition according to claim 1, wherein M denotes a cosmetically acceptable counterion chosen from cocoyl isethionates, lauroyl isethionates, or mixtures thereof.

5. The composition according to claim 1, further comprising at least one additional anionic surfactant chosen from: C.sub.6-C.sub.24 alkyl sulfates or C.sub.12-C.sub.20 alkyl sulfates; C.sub.6-C.sub.24 alkyl ether sulfates, C.sub.12-C.sub.20 alkyl ether sulfates, C.sub.6-C.sub.24 alkyl ether sulfates comprising from 2 to 20 ethylene oxide units, or C.sub.12-C.sub.20 alkyl ether sulfates comprising from 2 to 20 ethylene oxide units; C.sub.6-C.sub.24 acyl glutamates, C.sub.12-C.sub.20 acyl glutamates, or glutamates; C.sub.6-C.sub.24 acylsarcosinates, C.sub.12-C.sub.20 acylsarcosinates, or palmitoylsarcosinates; C.sub.6-C.sub.24 acyl lactylates, C.sub.12-C.sub.20 acyl lactylates, or behenoyl lactylates; (C.sub.6-C.sub.24)alkyl ether carboxylates, or (C.sub.12-C.sub.20)alkyl ether carboxylates; or C.sub.6-C.sub.24 alkylsulfosuccinates, C.sub.12-C.sub.20 alkylsulfosuccinates, or laurylsulfosuccinates.

6. The composition according to claim 1, wherein the total amount of anionic surfactant ranges from 25% to 65% by weight, relative to the total weight of the composition.

7. The composition according to claim 1, wherein the at least one type of solid full particles is chosen from: kaolin; or organic or inorganic colored pigments, or uncolored pearlescent agents.

8. The composition according to claim 1, further comprising at least one conditioning agent chosen from cationic surfactants, fatty esters other than triglycerides, fatty alcohols, vegetable oils, C.sub.6-C.sub.16 liquid hydrocarbons, hydrocarbons having more than 16 carbon atoms, ceramides, vegetable or animal waxes; non-silicone cationic polymers, non-silicone amphoteric polymers, or silicones.

9. The composition according to claim 8, wherein the total amount of conditioning agent ranges from 0.001% to 20% by weight, relative to the total weight of the composition.

10. The composition according to claim 1, further comprising at least one polyol represented by the following formula: ##STR00025## wherein: R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are chosen, independently of each other, a hydrogen atom, a C.sub.1-C.sub.6 alkyl radical or a C.sub.1-C.sub.6 mono- or polyhydroxyalkyl radical, A represents a linear or branched alkylene radical comprising from 1 to 18 carbon atoms, and optionally from 1 to 9 oxygen atoms, wherein A does not include a hydroxyl group, m denotes 0 or 1.

11. The composition according to claim 10, wherein the total amount of polyol ranges from 0.1% to 60% by weight, relative to the total weight of the composition.

12. The composition according to claim 1, further comprising at least one non-particulate antidandruff agent chosen from: 1-hydroxy-2-pyrolidone derivatives; 2,2-dithiobis(pyridine N-oxide); trihalocarbamides; triclosan; azole compounds; antifungal polymers; extracts of at least one non-photosynthetic, non-fruiting filamentous bacteria; ellagic acid, ethers of ellagic acid, salts of ellagic acid, salts of ethers of ellagic acid, or ellagic acid tannins; allantoin, coal or wood tars and derivatives thereof, undecylenic acid, fumaric acid, allylamines, or terbinafine.

13. The composition according to claim 12, wherein the total amount of non-particulate antidandruff agent ranges from 0.01% to 10% by weight, relative to the total weight of the composition.

14. The composition according to claim 1, comprising water in an amount ranging from 40% to 80% by weight, relative to the total weight of the composition.

15. A cosmetic hair treatment method for caring for, cleaning, and/or conditioning keratin materials, the method comprising: applying to the keratin materials a composition comprising: at least one anionic surfactant wherein at least one anionic surfactant is chosen from acyl isethionates represented by the following formula:
RC(O)OCH.sub.2CH.sub.2SO.sub.3M wherein: RC(O) is an acyl group comprising from 6 to 16 carbon atoms, and M denotes a cosmetically acceptable counterion, at least one type of solid full particles chosen from silicas, clays, pigments, pearlescent agents, or mixtures thereof, wherein the total amount of solid particles ranges from 6.7% to 15% by weight, relative to the total weight of the composition, and water in an amount of 35% to 80% by weight; wherein the total amount of anionic surfactant ranges from 25% to 70% by weight, relative to the total weight of the composition; and optionally rinsing after an optional leave-on time; wherein the total amount of acyl isethionates ranges from 12% to 35% by weight, relative to the total weight of the composition, and wherein the composition has a threshold stress at 25 C. of greater than or equal to about 100 Pa.

Description

EXAMPLES 1 and 2

(1) Washing hair compositions comprising the following ingredients (% by weight of commercial raw material) are prepared:

(2) TABLE-US-00001 Example 1 Example 2 SODIUM COCOYL 33 ISETHIONATE (29% AM) (HOSTAPON SCI 85) SODIUM COCOYL 33.58 ISETHIONATE/SODIUM (28.7% AM) ISETHIONATE (JORDAPON CI from BASF) Acrylic 0.4 acid/MAPTAC/acrylamide (0.08% AM) terpolymer at 20% as an aqueous solution (Merquat 2003) Hydroxypropylguar 0.2 trimethylammonium chloride Oxyethylenated glycerol 3.7 3.7 (26 OE) Glycol distearate 6.7% 6.7% 1,2-Octanediol 0.3 0.3 Fragrance, preservative Qs Qs pH agent Qs for pH Qs for pH 5.5 5.5 Water Qs for 100% Qs for 100%

(3) The compositions according to the examples are in the form of flexible solids. These compositions are used for cleaning the hair. During use, good distribution of the product on the head of hair, and also the obtaining of a creamy, smooth and abundant foam, are observed. The compositions rinse off and are eliminated easily.

(4) The composition of example 2 is tested on half a head, in comparison with a standard shampoo, on a panel of 6 individuals.

(5) It is noted that, with the composition according to the invention: the distribution of the product and the initiation of foaming are close to those obtained with the standard shampoo; the abundance of foam is much greater; the hair is smoother in the foam; the rapidity of rinsing is very much greater.

(6) With the composition according to the invention, the manageability of wet hair is improved, the hairs are more individualized and the hair is more tonic. On the dry hair, the hair is more tonic.

(7) For example 2: the viscoelastic spectrum (G and G as a function of frequency) is plotted for frequencies of between 10.sup.2 Hz and 100 Hz, at 25 C., under the conditions described in the description; it is observed that there is no crossover point of the two curves; the threshold stress at 25 C. is also measured, and it is determined that this stress is greater than 100 Pa; the penetration force is measured and is 427 g.

EXAMPLES 3 to 6

(8) Washing hair compositions comprising the following ingredients (% by weight of commercial raw material) are prepared:

(9) TABLE-US-00002 Example 3 Example 4 Example 5 Example 6 SODIUM COCOYL 33 33 33 33 ISETHIONATE (29% AM) (29% AM) (29% AM) (29% AM) (HOSTAPON SCI 85) Kaolin 3 PDMS (500 000 cst; 2 2 2 MW = 250 000) Polydimethyldiallyl- 1 ammonium chloride at (0.4% AM) 40% in water (Polyquaternium 6) Amodimethicone 2% AM containing 57.5% AM (Xiameter MEM-8299 Emulsion from Dow Corning) Glycerol 15 20 20 20 Glycol distearate 6.7% .sup.6.7% 6.7% 6.7% NaCl 3.5 3.5 3.5 3.5 Zinc pyrithione 2.8% (at 48% in water) (1% AM) Sorbitan monolaurate 3% 4 OE 1,2-Octanediol 0.2 Fragrance, preser- Qs Qs Qs Qs vative pH agent Qs for pH Qs for pH Qs for pH Qs for pH 5.5 5.5 5.5 5.5 Water Qs for Qs for Qs for Qs for 100% 100% 100% 100%

(10) Compositions 3 to 6 are in the form of flexible solids.

(11) These compositions are used for cleaning the hair. During use, good distribution of the product on the head of hair, and also the obtaining of a creamy, smooth and abundant foam, are observed. The compositions rinse off and are eliminated easily.