Cleaning compositions containing unmodified clay and polyglycerol surfactants

Abstract

Cleaning composition containing a non-modified clay and a polyglyceryl surfactant. The object of the invention is a cosmetic composition, especially for cleansing the skin and / or the skin appendages, which comprises, in an aqueous physiologically acceptable medium: at least one non-modified clay chosen from trioctahedral smectites, and at least one ester chosen from esters of fatty acids comprising from 4 to 16 carbon atoms and of polyglycerols comprising from 2 to 10 glycerol units, the weight ratio of the ester:clay being strictly greater than 1.

Description

Technical Field

[0001] This invention relates to cleaning compositions containing clay. Background Technology

[0002] Skin cleansing is crucial for skincare. It must be as effective as possible because sebum residue, such as excess sebum or leftover makeup, can accumulate in skin folds and clog pores, leading to acne. Effective skin cleansing is especially important when using foaming products.

[0003] Commercially available foaming cleansing products are available in block, gel, or foaming liquid forms. They typically include soaps, which offer the advantage of providing abundant, smooth, and fine foam, or combinations of foaming surfactants and stabilizers. In particular, gel-form compositions usually consist of a mixture of water, water-soluble polymers, and surfactants. Loading agents can also be added to the composition to provide an anti-oily skin effect; in effect, these loading agents deposit on the skin, absorbing sebum and / or sweat, thus maintaining a matte finish on the face. The latter, in particular, includes clay.

[0004] However, the current compositions contain a high clay content, which leads to deposition problems and has a detrimental effect on the sensory properties of the compositions.

[0005] Therefore, there is a need for cleansing compositions for human keratin materials, preferably for facial and / or body skin and / or hair cuticles, which have a satisfactory foam texture, especially a smooth and fine foam, while remaining stable and possessing good cleansing performance. Cleansing compositions with oil-resistant properties are also needed, with improved stability, particularly reduced deposition problems. In particular, foaming cleansing compositions with little or no syneresis are required. Summary of the Invention

[0006] The object of this invention is to provide such a composition. The compositions according to the invention do not have the disadvantages of the prior art, especially that they have good quality of use (quality and smoothness of foam, anti-oil skin effect) and are stable (i.e., no dehydrating effect).

[0007] In fact, the inventors have demonstrated that the combination of unmodified clay selected from trioctahedral montmorillonite and short-chain polyglycerol surfactants (i.e., C4-C16) enables the production of cosmetic compositions that meet these requirements.

[0008] Therefore, the object of the present invention is a cosmetic composition, particularly for cleansing skin and / or skin appendages, comprising, in an aqueous physiologically acceptable medium:

[0009] At least one unmodified clay selected from trioctahedral montmorillonite, and

[0010] Selected from at least one ester of fatty acids comprising 4-16 carbon atoms and polyglycerol esters comprising 2-10 glycerol units.

[0011] The weight ratio of the ester to clay is strictly greater than 1.

[0012] Another object of the present invention is a method for cleaning skin and / or skin appendages, comprising applying a composition according to the present invention to skin and / or skin appendages. Detailed Implementation

[0013] "Physiologically acceptable medium" refers to a medium that is compatible with the skin and / or skin appendages.

[0014] Unmodified clay

[0015] The compositions according to the invention comprise at least one unmodified clay selected from trioctahedral montmorillonite.

[0016] This clay belongs to layered silicates and has a 2:1 layered structure. The classification of clay references the following work: Bergaya F., Lagaly G., “Handbook of Clay Science” 2nd Edition. A. Fundamentals—Elsevier Ltd., 2013.

[0017] Layered silicates are silicate minerals constructed by stacking tetrahedral layers (“T”), in which the tetrahedra share three of the four vertices (“base” oxygen) and the fourth vertex (“apex” oxygen) is connected to an octahedral layer (“O”) occupied by different cations. In layered silicates with a TOT structure, the octahedral layer O is inserted between two tetrahedral layers T.

[0018] The 2:1 layered structure is also called the TOT structure, where T stands for tetrahedral layer and O stands for octahedral layer.

[0019] The unmodified clay according to the present invention belongs to montmorillonite.

[0020] The structure of montmorillonite differs from other layered silicates with a 2:1 layered structure in that there are interleaved spaces between each combination of TOT sheets, which depend on the hydration state of the clay, and interleaved cations are inserted within these spaces. Montmorillonite is often referred to as "expanded" clay. Preferably, the interleaved cations are selected from Ca... 2+ Mg 2+ Na + and Li + .

[0021] The unmodified clay according to the present invention is selected from trioctahedral montmorillonite.

[0022] The characteristic of trioctahedral montmorillonite is that all octahedral sites in the TOT structure are predominantly occupied by divalent cations. Preferably, the divalent cations at the octahedral sites are selected from Mg. 2+ and Fe 2+ .

[0023] In particular, the unmodified clay according to the invention is trioctahedral montmorillonite, which can be exfoliated or "activated" in the presence of water, thereby forming an aqueous gel due to the presence of interlobular cations in the structure.

[0024] When water comes into contact with the unmodified clay suitable for this invention, it hydrates the layers of the unmodified clay, resulting in expansion of the distance between the layers. The layers may then separate through a peeling and / or delamination mechanism. An aqueous gel is then obtained. The content of this particular type of clay relative to the total weight of the composition is substantially in the range of 0.5% to 10% by weight, which enables the obtaining of a gelled aqueous phase in the composition according to the invention.

[0025] Preferably, relative to the total weight of the clay, the clay according to the invention contains greater than or equal to 30% by weight, preferably 35% to 65% by weight of SiO2, and greater than or equal to 10% by weight, preferably 15% to 30% by weight of MgO.

[0026] According to a preferred embodiment, the clay according to the invention comprises 35% to 65% by weight of SiO2 and 15% to 30% by weight of MgO relative to the total weight of the unmodified clay.

[0027] Preferably, in the clay according to the invention, the SiO2 / MgO weight ratio is between 1 and 3, more preferably between 1.5 and 2.5, and more preferably between 1.8 and 2.4.

[0028] Preferably, the clay according to the invention further comprises between 0% and 15% by weight of Al2O3 relative to the total weight of the clay.

[0029] According to the first alternative, the clay applicable to the present invention lacks (does not contain) Al2O3.

[0030] According to the second alternative, the clay suitable for use in this invention may comprise 0.1% to 15% by weight, preferably 8% to 12% by weight, of Al2O3 relative to the total weight of the unmodified clay.

[0031] According to another preferred embodiment, when Al2O3 is present in clay suitable for the present invention, the SiO2 / Al2O3 weight ratio is strictly greater than 3.

[0032] Preferably, the clay according to the invention has a density of less than 2.7. Density (or specific gravity) is a very important property of minerals; its calculation is quite simple. It has no units and is measured using various devices and techniques described in most mineralogy handbooks. Of these methods, the Jolly balance and lever balance are best suited for the study of mineral samples. The apparatus used for these measurements is simple and can be constructed at low cost (Sinkankas, 1966). Density conforms to the following calculation:

[0033] [Mathematical Expression 1]

[0034] Density = (weight in air) / (weight in air - weight in water)

[0035] According to a specific embodiment, the unmodified clay suitable for use in this invention has the following general molecular formula:

[0036]

[0037] in:

[0038] M 4+ The cation is represented, preferably Si. 4+ ,

[0039] M 3+ The cation is represented, preferably Al. 3+ ,

[0040] M 2+ The cation is represented, preferably Fe. 2+ or Mg 2+ ,

[0041] M + The cation is represented, preferably Li. + ,

[0042] X represents an interfoliation cation, preferably Ca. 2+ Na + Li + Or a mixture thereof,

[0043] x represents the tetrahedral substitution rate.

[0044] y represents the octahedral substitution rate.

[0045] k represents the valence of interfoliar cation X.

[0046] n represents an integer, preferably 0 to 100.

[0047] The unmodified clays suitable for use in this invention are typically provided in powder form.

[0048] Preferably, the unmodified clay is selected from unmodified lithium montmorillonite, unmodified magnesia, and unmodified soapstone.

[0049] Advantageously, the unmodified clay is unmodified lithium montmorillonite. Unmodified lithium montmorillonite can be defined by the following formula: Na x (Mg 3-x Li x Si4O 10 (OH)2, x is between 0.2 and 0.4, preferably equal to 0.3.

[0050] Preferably, the clay in the composition according to the invention is different from zinc montmorillonite, magnesium montmorillonite, talc, and montmorillonite.

[0051] The term "unmodified clay" refers to natural or synthetic clay that has not undergone any type of modification. For example, when the unmodified clay suitable for use in this invention is unmodified lithium montmorillonite, the latter differs from that modified by C... 10 -C 22 Lithium montmorillonite modified with fatty acid ammonium chloride, for example, lithium montmorillonite modified with distearate dimethyl ammonium chloride. According to one embodiment, the unmodified clay suitable for use in this invention is synthesized.

[0052] According to a preferred embodiment, the unmodified clay suitable for use in this invention is natural, preferably natural lithium montmorillonite.

[0053] The term "modified clay" refers to lamellar silicates whose lipophilicity has been increased, for example, through an ion exchange reaction with quaternary ammonium salts, preferably quaternary ammonium chlorides. The molecular formula of quaternary ammonium chlorides is shown below, for example, benzyl dimethyl stearyl ammonium chloride, or quaternary ammonium salt-18.

[0054] Where R 1 The groups are independently selected from C12-C20 saturated straight-chain alkyl groups. The modified clay is, for example, distearate dimethylammonium lithium montmorillonite or silachlorite slurry.

[0055] Preferably, the compositions according to the invention are substantially free of modified clay, and more preferably substantially free of distearate dimethylammonium lithium montmorillonite and silachlor slurry. "Substantially free" means that the composition contains less than 0.1% by weight, preferably less than 0.05% by weight, and more preferably less than 0.01% by weight of modified clay relative to the total weight of the composition. Preferably, the compositions according to the invention are completely free of modified clay.

[0056] Preferably, the clay is present in a content between 0.1% and 10% by weight, preferably between 0.5% and 8% by weight, preferably between 1% and 5% by weight, and advantageously between 1.5% and 3% by weight, relative to the total weight of the composition.

[0057] As an unmodified clay and more specifically unmodified lithium montmorillonite, clays sold by Elementis under the names Bentone EW or HYDROCLAY 2000LO can be used.

[0058] esters of fatty acids and specific polyglycerols

[0059] The compositions according to the invention further include at least one ester selected from fatty acids comprising 4-16 carbon atoms and polyglycerol esters comprising 2-10 glycerol units.

[0060] Preferably, the ester according to the invention is a monoester or a diester, preferably a monoester, which is selected from fatty acids comprising 4-16 carbon atoms and polyglycerol esters comprising 2-10 glycerol units.

[0061] The term "polyglycerol" refers to a glycerol polymer composed of straight-chain glycerol units.

[0062] The esters more particularly considered according to the invention are esters obtained by esterification of polyglycerol and a carboxylic acid having a carbon chain of a given length.

[0063] Carboxylic acids can be straight-chain or branched, saturated or unsaturated.

[0064] Preferably, it is a straight-chain monocarboxylic acid.

[0065] Typically, they are obtained by esterifying at least one hydroxyl functional group of polyglycerol with a carboxylic acid having a carbon chain of a given length.

[0066] According to a particular embodiment, the esters suitable for use in this invention can be obtained by esterifying polyglycerol with one or more identical or different carboxylic acids. It can be a hydroxylated monoester, a hydroxylated diester, a hydroxylated triester, or a mixture thereof.

[0067] The ester is formed from (i) at least one fatty acid (also known as C4-C16 fatty acid) comprising an alkyl or alkenyl chain containing 4-16 carbon atoms and (ii) 2-10 glycerol units.

[0068] Preferably, the fatty acid comprises 6-14 carbon atoms, more preferably 8-12 carbon atoms. Preferably, the fatty acid is saturated and contains a straight-chain alkyl chain.

[0069] Preferably, the fatty acid comprising 4-16 carbon atoms is selected from decanoic acid, lauric acid, myristic acid, and palmitic acid.

[0070] Preferably, the fatty acid is a C10 fatty acid, and more preferably decanoic acid.

[0071] Preferably, the ester comprises 3-6 glycerol units, and more preferably 4 glycerol units.

[0072] In a preferred embodiment of the invention, the ester is an ester of fatty acid comprising 10 carbon atoms and polyglycerol comprising 4 glycerol units.

[0073] More preferably, the ester is a polyglycerol monodecanoate comprising four glycerol units, namely polyglycerol-4 monodecanoate.

[0074] Commercially available products based primarily on polyglycerol-4 monodecanoate or PG-4 decanoate are available from EVONIKGOLDSCHMIDT under the trade name TEGOSOFT PC 41.

[0075] According to another embodiment of the invention, the ester is an ester of a fatty acid comprising 12 carbon atoms and polyglycerol comprising 5 glycerol units, preferably a polyglycerol monolaurate comprising 5 glycerol units, i.e., polyglycerol-5 monolaurate. Commercially available products primarily based on polyglycerol laurate or PG-5 laurate are available from Taiyo Kagaku Corporation under the trade name SUNSOFT.

[0076] The fatty acid and polyglycerol esters may be present in the composition according to the invention in an amount ranging from 0.5% to 10% by weight, preferably from 1% to 8% by weight, and more preferably from 2% to 6% by weight, relative to the total weight of the composition.

[0077] According to the present invention, the weight ratio of (ester:clay) in the composition is strictly greater than 1. Preferably, it is greater than or equal to 1.05, more preferably greater than or equal to 1.5, and more preferably greater than or equal to 1.8.

[0078] polymer

[0079] Polymers that can be used in the compositions according to the invention are, for example, oligosaccharides or polysaccharides, acrylic and / or methacrylic polymers or copolymers, carboxyvinyl polymers, polyglycerol acrylates or methacrylates.

[0080] As specific polymers, they may include carboxyvinyl polymers sold by GOODRICH under the trade name CARBOPOL or by SIGMA under the trade name SYNTHALEN K, acrylic acid / ethyl acrylate copolymers, stearyl acrylic acid / methacrylate copolymers, polyglycerol methacrylates sold by GUARDIAN under the trade name LUBRAJEL or polyglycerol acrylates sold by HISPANO CHIMICA under the trade name HISPAGEL.

[0081] Preferably, the composition of the present invention comprises at least one polysaccharide or oligosaccharide, and more preferably at least one polysaccharide. This polysaccharide is a hydrophilic thickening polymer.

[0082] Preferably, the polysaccharide is selected from natural polymers, such as cellulose derivatives, such as carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, hydroxypropyl methyl cellulose, ethyl hydroxyethyl cellulose, xanthan gum, carob gum, gum arabic, acacia gum, natural and modified cationic stearin, galvanic gum, konjac gum, rhamnose gum, alginate, pectin, carrageenan, modified or unmodified starch, carrageenan, galactomannan, pullulan, modified or unmodified guar gum and its derivatives such as hydroxypropyl guar gum, hyaluronic acid salts such as sodium hyaluronate, arabinogalactan such as gum arabic, extracellular polysaccharides (microbial polysaccharides) including xanthan gum or dextran, fructans such as inulin, and agar.

[0083] Preferably, the oligosaccharide is selected from diholoside or triholoside, such as especially diholoside or triholoside of cellobiose, gentiobiose, inulinobiose, isomaltose, isomaltulose, kosherb, lactose, laminaria bisaccharide, Leuconostose, maltose, maltulose, melibiose, Aspergillus niger, acacia syrup, rutinose, sucrose, sophorose, trehalose, trehalulose, pinebiose, glucopyranosyl sucrose, fucosyl lactose, gentiotriose, inulinotriose, 1-sucrose trisaccharide, 6-sucrose trisaccharide, maltotriose, mannitol, pinotriose, neosucrose trisaccharide, panose, raffinose, rhamnose trisaccharide, cyclodextrin, stachyose, or mustachyose.

[0084] Preferably, the composition of the present invention contains at least one polysaccharide, and such polysaccharide is selected from alginate and natural gums, such as xanthan gum.

[0085] The polymer, preferably the polysaccharide, may be present in the composition according to the invention in an amount ranging from 0.1% to 10% by weight, preferably from 0.5% to 7% by weight, and preferably from 0.7% to 3% by weight, relative to the total weight of the composition.

[0086] Aqueous phase

[0087] The compositions according to the invention comprise a physiologically acceptable aqueous phase, which forms a physiologically acceptable aqueous medium.

[0088] The compositions according to the invention preferably comprise an aqueous phase comprising water and optionally one or more organic solvents soluble in water at 25°C. These solvents may advantageously be selected from, for example, straight-chain or branched alkanols of C2-C4, such as ethanol and isopropanol, propanol, butanol; polyols, especially those having 2-20 carbon atoms, preferably 2-6 carbon atoms. The polyols may be selected from glycerol and its derivatives and glycols and their derivatives. The polyols may be selected from glycerol, diglycerol, polyglycerol, diethylene glycol, propylene glycol, dipropylene glycol, butanediol, pentanediol, hexanediol, 1,3-propanediol, 1,5-pentanediol, 1,2-octanediol, polyethylene glycol (especially polyethylene glycol having 5-50 oxyethylene groups), and sugars (such as sorbitol), and mixtures thereof.

[0089] The composition typically comprises 40% to 98% by weight, preferably 60% to 95% by weight, and preferably 70% to 93% by weight of water relative to the total weight of the composition.

[0090] The amount of organic solvent relative to the total weight of the composition can be, for example, from 0.01% to 15% by weight, preferably from 0.5% to 13% by weight, and more preferably from 1% to 10% by weight.

[0091] Preferably, the composition according to the invention is an aqueous gel.

[0092] Furthermore, the compositions according to the invention may include one or more conventional cosmetic additives, particularly selected from fatty substances, emollients, antioxidants, surfactants, stabilizers, chelating agents, moisturizers, vitamins, fragrances, preservatives, alkalizing agents or acidifying agents, or any other ingredients commonly used in cosmetics and / or dermatological products, especially for the manufacture of compositions in the form of aqueous gels.

[0093] Preferably, the compositions according to the invention are substantially free of synthetically derived polymers. "Substantially free" means that, relative to the total weight of the composition, the composition contains less than 1% by weight, preferably less than 0.5% by weight, and more preferably less than 0.1% by weight of synthetically derived polymers. Preferably, the compositions according to the invention are completely free of synthetically derived polymers.

[0094] Preferably, the compositions according to the invention are substantially free of alkyl polyglycoside surfactants. "Substantially free" means that, relative to the total weight of the composition, the composition contains less than 1% by weight, preferably less than 0.5% by weight, and more preferably less than 0.1% by weight of alkyl polyglycoside surfactants. Preferably, the compositions according to the invention are completely free of alkyl polyglycoside surfactants.

[0095] Another object of the present invention is a method for cleaning skin and / or skin appendages, comprising applying a composition according to the invention to the skin and / or skin appendages. Preferably, the composition is rinsed off.

[0096] Therefore, preferably, the method for cleaning skin and / or skin appendages according to the invention comprises applying the composition according to the invention to the skin and / or skin appendages, and then rinsing the skin and / or skin appendages.

[0097] Unless otherwise stated, expressions such as “between… and…”, “ranging from… to…”, “not equal to…”, and “… to…” should be understood to include endpoint values.

[0098] Specific, but non-limiting, embodiments illustrating the invention will now be provided.

[0099] Unless otherwise stated, the pressure in the examples is atmospheric pressure. Unless otherwise stated, % means weight relative to the total weight of the composition (%w / w).

[0100] Example

[0101] Example 1: Characterization of natural unmodified clay according to the present invention

[0102] A / Prepare the aqueous gel according to the following scheme:

[0103] 1. Prepare a mixture of water and 2% by weight of the active substance of each of the ingredients in Table 1 below: mix at 3000 rpm for 10 minutes on a Rayneri stirrer (rotor / stator);

[0104] 2. Sample preparation by dilution: or by mixing at 3500 rpm for 3 minutes (100 g) in a mixer;

[0105] 3. Observe / take photos and perform rheological measurements at t=24h (except for Jiaoling stone).

[0106] [Table 1]

[0107]

[0108] The results are as follows:

[0109] [Table 2]

[0110]

[0111] These results indicate that only the unmodified lithium montmorillonite according to the present invention can form compositions in the form of aqueous gels.

[0112] Example 2: Evaluation of the sebum absorption properties of the composition according to the invention relative to a comparative composition.

[0113] Composition C1 and comparative composition C* according to the present invention were prepared using the ingredients mentioned in the table below according to the following scheme:

[0114] Lithium montmorillonite or kaolin is dispersed in a water / glycerol mixture heated to 60°C using a rotor-stator mix for 10 minutes. It is then cooled to ambient temperature. Sodium alginate is dispersed using a rotor-stator mix and hydrated for 5 minutes. Finally, surfactants are added, followed by preservatives and odorants.

[0115] [Table 3]

[0116]

[0117] The sebum absorption properties of compositions C1 and C* were evaluated. The following test protocol simulated the changes of the compositions relative to the sebum / sweat mixture on the skin over time:

[0118] 1) A mixture of Vichy thermal spring water / oleic acid / oleyl alcohol polyether-10 (in weight ratio of 79 / 20 / 1) was prepared to simulate the sebum / sweat mixture of the hydrolipid membrane close to that of the skin.

[0119] 2) Using an automated coating machine, a 100 μm thick film was laid onto a DURAPORE hydrophobic filter with a 0.22 m GVHP membrane filter (commercial reference code: GVHP00010). The membrane was dried in an oven at 40°C for 24 hours.

[0120] 3) Use a luminance meter (BYK) to measure the luminance of the dried film at 60 degrees Celsius.

[0121] 4) Once the mixture of Vichy thermal spring water / oleic acid / oleyl alcohol polyether-10 has returned to ambient temperature, spray the mixture onto the membrane.

[0122] 5) Six minutes after spraying, measure the brightness of the membrane at 60 degrees using a luminance meter (BYK). Then spray the membrane again, and measure the brightness again six minutes after the second spray. Then spray the membrane a third time, and measure the brightness again six minutes after the third spray. The measured value is called the unit brightness UB.

[0123] 6) Calculate the performance index, which makes it possible to quantify the performance of the compositions C1 and C*.

[0124] For comparison, a negative reference (amino-propane-sulfonic acid-AMPS-unloaded gel, index = 0) and a positive reference (AMPS gel containing 2% aerogel, index = 100) were selected.

[0125] Therefore, an index is calculated for each composition to position it within the range of 0 to 100. If the index is greater than 100, it means that the tested composition is even more effective than the positive reference.

[0126] The index is calculated using the following formula:

[0127]

[0128] The results are listed in the table below:

[0129] [Table 4]

[0130]

[0131] The values ​​in column 1 correspond to the brightness of the dry film before the solution is sprayed. The values ​​in column 2 are the brightness 6 minutes after the first spray, followed by the corresponding performance index in column 3. The values ​​in column 4 correspond to the brightness 6 minutes after the second spray. The values ​​in column 6 correspond to the brightness 6 minutes after the third spray.

[0132] This indicates that when kaolin clay is used, the brightness value varies greatly, resulting in a performance index ranging from average to low based on the number of sprays. When lithium montmorillonite is used, the increase in brightness is much more pronounced. The performance index of formulation C1 according to the invention is excellent after the first spray and remains satisfactory thereafter. Therefore, lithium montmorillonite is able to absorb significantly more artificial sebum than kaolin clay, resulting in a significantly lower impact on the brightness of the film (and thus on skin brightness).

[0133] Example 3: Evaluation of the foaming properties of the composition according to the invention relative to a comparative composition

[0134] Composition F1 and comparative compositions F2-F4 according to the present invention were prepared using the ingredients mentioned in the table below, according to the scheme in Example 2:

[0135] These compositions are all gels.

[0136] [Table 5]

[0137]

[0138] as: active substance

[0139] Assess the foam texture (firmness) of the gel. "Firmness" refers to the force required to bring the surface of the tested product to a predetermined deformation. This force is expressed in grams (g). Firmness measurements were performed using a TA.XT plus brand construction instrument from Stable Micro Systems.

[0140] Conduct the test as follows:

[0141] Foam formation:

[0142] In a 400ml beaker, dilute 30g of the recipe with tap water three times.

[0143] Then use a Braun (600w Turbo) mixer at speed 1 and position 15 to generate foam.

[0144] Then, a construction instrument was used to measure the density of the foam:

[0145] Measurements were taken using a TA.XT plus branded construct from Stable Micro Systems. The foam was extruded using the following kit: a 50mm diameter resin glass jar with reference code A / EB + a 45mm diameter piston.

[0146] Immediately after foam is generated at time T=2 minutes, fill the foam extrusion can with Marysette, level it, and then weigh it.

[0147] Measurement scheme: Measurement threshold: 5g, stroke: 40mm, sensor descent rate: 40mm.s -1 Measurement method: reverse compression.

[0148] The results are listed in the table below:

[0149] [Table 6]

[0150]

[0151] The higher the measurement value, the stronger the foam, and the smoother and more delicate the product will be when applied.

[0152] The highest value was observed for polyglycerol-4-decanoate (according to formula F1 of the present invention). Therefore, the texture obtained using polyglycerol-4-decanoate is the smoothest and finest compared to the other surfactants evaluated.

Claims

1. A cosmetic composition for cleansing skin and / or skin appendages, said cosmetic composition being an aqueous gel, said aqueous gel comprising, in an aqueous physiologically acceptable medium: At least one unmodified clay selected from unmodified lithium montmorillonite, and At least one monoester, selected from fatty acids comprising 6-14 carbon atoms and polyglycerol esters comprising 3-6 glycerol units. Monoester: The weight ratio of unmodified clay is greater than 1.

2. The composition according to claim 1, characterized in that, The unmodified clay comprises, relative to the total weight of the unmodified clay, 30% or more by weight of SiO2 and 10% or more by weight of MgO.

3. The composition according to claim 2, characterized in that, The weight ratio of SiO2 / MgO in the unmodified clay is between 1 and 3.

4. The composition according to claim 1 or 2, characterized in that, The unmodified clay also includes Al2O3 in a content between 0% and 15% by weight, relative to the total weight of the unmodified clay.

5. The composition according to claim 1 or 2, characterized in that, The unmodified clay is present in an amount between 0.1% by weight and 10% by weight relative to the total weight of the composition.

6. The composition according to claim 1 or 2, characterized in that, The monoester is formed from (i) at least one fatty acid comprising an alkyl or alkenyl chain containing 8-12 carbon atoms, and (ii) 3-6 glycerol units.

7. The composition according to claim 1 or 2, characterized in that, The monoester is an ester of fatty acid comprising 10 carbon atoms and polyglycerol comprising 4 glycerol units.

8. The composition according to claim 7, characterized in that, The monoester is a polyglycerol monodecanoate comprising four glycerol units, namely polyglycerol-4 monodecanoate.

9. The composition according to claim 1 or 2, characterized in that, The monoester is present in an amount of 0.5% to 10% by weight relative to the total weight of the composition.

10. The composition according to claim 1 or 2, characterized in that, The weight ratio of the monoester to unmodified clay is greater than or equal to 1.

05.

11. The composition according to claim 1 or 2, characterized in that, The composition includes at least one polymer selected from oligosaccharides, polysaccharides, acrylic and / or methacrylic acid polymers or copolymers, carboxyvinyl polymers, polyglycerol acrylates, and polyglycerol methacrylates.

12. The composition according to claim 11, characterized in that, The composition comprises at least one polysaccharide selected from carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, hydroxypropyl methyl cellulose, ethyl hydroxyethyl cellulose, carob gum, acacia gum, natural and modified cationic stearin, galvanic gum, konjac gum, rhamnose gum, alginate, pectin, carrageenan, modified or unmodified starch, carrageenan, galactomannan, pullulan, hydroxypropyl guar gum, sodium hyaluronate, gum arabic, xanthan gum, dextran, inulin, and agar.

13. The composition according to claim 1 or 2, characterized in that, The aqueous medium comprises water and optionally one or more organic solvents that are soluble in water at 25°C.

14. A method for cleaning skin and / or skin appendages, comprising applying the composition according to any one of claims 1 to 13 onto the skin and / or skin appendages.

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