DRY COMPOSITION SUITABLE FOR PRESSING, AND ITS USES

Abstract

The present invention relates to a dry composition capable of being pressed, comprising: - at least one powdered polyol, - at least one surfactant, - at least one powdered gelling agent, - optionally, at least one internal lubricant, - optionally, at least one preservative, - optionally, at least one buffering and pH-regulating agent, - optionally, at least one fragrance, said composition in the form of a pressable powder having flow properties corresponding to a Carr index less than or equal to 25 and a Hausner ratio less than or equal to 1.34. The present invention also relates to a solid product obtained by pressing the dry composition, to a cosmetic composition, as well as to their preparation process and use.

Description

Title of the invention: DRY COMPOSITION CAPABLE OF BEING PRESSED, AND ITS USES Technical field

[0001] The present invention relates to a dry composition capable of being pressed, to a method for preparing a cosmetic composition, as well as to the cosmetic composition and its use.

[0002] The present invention finds applications in particular in the field of cosmetics, in particular in the hygiene and care of the skin and / or mucous membranes and / or appendages.

[0003] In the description below, the references in brackets ([ ]) refer to the list of references presented at the end of the text. State of the art

[0004] Makeup removers are body hygiene products used daily, or even twice daily, because they remove impurities and traces of makeup from the skin and eyes.

[0005] Makeup remover products are generally packaged in bottles, possibly equipped with a pump. They generally come in the form of milk, lotion, micellar water, or even oil. Apart from oil, these products mainly contain water.

[0006] However, environmental concerns are becoming increasingly important in the cosmetics field. Thus, for ecological reasons, we are currently seeking to reduce the quantity of water in this type of cosmetic product, in order to reduce the quantity of water transported, and to reduce the quantity of packaging.

[0007] Thus, one of the ways to reduce the quantity of water in cosmetic products is to formulate them in solid and / or dry form, to be diluted or reconstituted by the consumer at home to obtain the finished product.

[0008] Generally speaking, the limitation of these products concerns their rendering after dilution. Indeed, the texture of the finished product is often different from the texture of an equivalent conventional product. In addition, the sensoriality of the product is often inferior to that of an equivalent conventional product.

[0009] Thus, there remains a strong expectation for products in dry form, making it possible to reduce the quantities of single-use plastic and water used during packaging and transport, while retaining the sensory properties of a classic makeup remover product and respecting good eco-design.

[0010] Description of the invention

[0011] The present invention aims precisely to meet these needs and drawbacks of the prior art.

[0012] The inventors of the present invention have in fact developed a solid or dry product making it possible to obtain a finished product which, once reconstituted by the addition of water at a temperature of between approximately 15°C and 50°C by the consumer, presents a wide range of textures, including innovative textures, as well as sensory properties as satisfactory as conventional products.

[0013] In particular, the inventors have succeeded in developing, from a mixture in the form of powders or granules, and after reconstitution with water, a cosmetic composition having a texture allowing it to be spread on the skin. The inventors have also developed, from this mixture of powders or granules, a compact solid form that is sufficiently solid to be transported while remaining soluble to transform into a cosmetic composition having a texture allowing it to be spread on the skin after the addition of water.

[0014] The galenic developed by the inventors also has the following advantages: - A wide range of galenics once the final product is reconstituted by adding water, including a gel texture, a foamy gel texture, a white opaque gel resembling milk and a syrupy texture like honey, likely to satisfy a wide range of consumers, - industrialization facilitated by the improvement of the flow of ingredients, particularly in the form of powders or granules, and the reduction of stickiness during compaction, - better sensoriality, compared to micellar water when removing make-up, which provides more glide and comfort, - removing makeup products, even waterproof, from the face, eyes and lips, to be used with or without rinsing, - better respect for the environment by not transporting water to stores, - a reduction in shelf space in stores. Thus, a first object of the invention relates to a dry composition capable of being pressed, comprising: - at least one powdered polyol, - at least one surfactant, - at least one powdered gelling agent, - optionally, at least one internal lubricator, - optionally, at least one preservative, - optionally, at least one buffering and pH regulating agent, - optionally, at least one perfume, said dry composition capable of being pressed having flow properties corresponding to a Carr index less than or equal to 25 and a Hausner ratio less than or equal to 1.34.

[0015] For the purposes of the present invention, the term "dry composition" means a composition that is free of water and not compacted, i.e. before the compaction step. Since the composition is not compacted, it has flow properties as defined above, and is therefore distinguished from a solid product. As such, the dry composition may be in any suitable form, such as, for example, a powder or granules.

[0016] For the purposes of the present invention, the term "polyol" means any organic compound comprising at least one hydroxyl group (-OH), provided that this compound is in the form of a powder. Advantageously, within the scope of the invention, the polyols make it possible to obtain, once the dry composition has been pressed, a compact tablet that is sufficiently solid to be transported, while remaining soluble to give the reconstituted product, after the addition of water, a galenic that may be a gel texture, such as for example a micellar jelly, a foamy gelled texture, a white opaque gel resembling milk or a syrupy texture such as honey. These may, for example, be polyols from the glycitol class. The at least one polyol may in particular be chosen from erythritol, sorbitol and mannitol. Advantageously, the composition may comprise erythritol and sorbitol as polyols.Advantageously, the concentration of at least one polyol in the dry composition may be chosen to obtain the aforementioned technical effect, depending on the other components of the composition. In particular, the concentration may be between 1 and 90% by weight relative to the total weight of said composition, for example between 10 and 80%, or between 20 and 70%, or between 30 and 50%, or between 40 and 45%.

[0017] For the purposes of the present invention, the term "surfactant" means any compound that modifies the surface tension between two surfaces. This compound may be in the form of a powder, a liquid or a solid capable of being ground to form a powder before mixing with the other ingredients of the dry composition. Whatever the form of the surfactant, it is possible to mix it with the other ingredients, namely the polyol and the gelling agent and possibly the optional ingredients, despite its flow characteristics at the time of its mixing with the other ingredients. The surfactant may, if necessary, be ground or granulated before mixing in order to obtain a dry composition having the flow properties mentioned above, namely a Carr index less than or equal to 25 and a Hausner ratio less than or equal to 1.34. Advantageously, in the context of the invention, the surfactant makes it possible to cleanse and / or remove make-up from the skin and / or appendages by forming micelles, even in the case of waterproof make-up, despite a low concentration of surfactants in the composition of the invention. The at least one surfactant may in particular be chosen from cocamidopropyl betaine, sodium cocoyl glutamate, sodium methyl cocoyl taurate, sodium cocoyl glycinate and sodium cocoyl isethionate. Advantageously, the concentration of at least one surfactant in the dry composition may be chosen to obtain the aforementioned technical effect, depending on the other components of the composition.In particular, the concentration may be between 0.0001 and 45% by weight relative to the total weight of said dry composition, in particular when the reconstituted cosmetic composition is a rinse-off product, or between 0.0001 and 10%, in particular when the reconstituted cosmetic composition is a non-rinsed product, for example between 0.10 and 9.0%, or between 0.10 and 8.8%, or between 0.20 and 7.0%, or between 0.30 and 5.0%, or between 0.40 and 4.5%, or between 7.0 and 8.8%.

[0018] For the purposes of the present invention, the term "gelling agent" means any compound that gives a preparation the consistency of a gel, provided that this compound is in the form of a powder. Advantageously, within the scope of the invention, the flow and compression properties of the gelling agent make it possible to reduce the sticky effect conferred by the polyols and the surfactants so that the dry composition flows in a manner suitable for industrialization when mixing the ingredients, and to prevent it from sticking to the instruments during compaction. Furthermore, advantageously, the gelling agent can prevent the formula from soaping. Advantageously, the concentration of at least one gelling agent in the dry composition can be chosen to obtain the aforementioned technical effect, depending on the other components of the composition.In particular, the concentration may be between 1 and 90% by weight relative to the total weight of said composition, for example between 10 and 80%, or between 20 and 70%, or between 30 and 50%, or between 40 and 45%.

[0019] After mixing the above-mentioned ingredients, and possibly the optional ingredients, the dry composition capable of being pressed has flow properties corresponding to a Carr index less than or equal to 25 and a Hausner ratio less than or equal to 1.34. This can be obtained by simply mixing the different ingredients, possibly with the optional ingredients, or by going through one or more steps of granulation of all or part of the ingredients, before or after their mixing, separately or together. Thus, the dry composition according to the invention can be in the form of a powder or granules.

[0020] The Carr index can be measured by any means known to those skilled in the art, for example with a GranuPack® (Granutools) according to the procedure described in Assia Saker's thesis. Critical study of some experimental techniques for evaluating the Flowability of powders. Process engineering. University of Lorraine, 2018. French. ffNNT: 2018LORR0314ff. fftel-02130382 ([1]) using the following formula: Carr index = ptassee

[0021] The Hausner ratio can be calculated by any means known to those skilled in the art, for example with a GranuPack® (Granutools) according to the procedure described in the thesis of Assia Saker ([1]), using the following formula: Hausner ratio =

[0022] The Carr index and the Hausner ratio are parameters commonly used by those skilled in the art to evaluate the flowability of a substance, according to the table below, taken from the thesis of Assia Saker ([1]):

[0023] [Tables 1] Flowability Hausner Ratio Carr Index (%) Excellent, free-flowing 1.00-1.11 <10 Good 1.12-1.18 11-15 Fair 1.19-1.25 16-20 Fair 1.26-1.34 21-25 Poor, cohesive powder 1.35-1.45 26-31 Very poor 1.46-1.59 32-37 Very very poor >1.60 >38

[0024] The at least one gelling agent may for example be chosen from starches such as hydroxypropyl starch phosphate, distarch phosphate, sodium carboxymethyl starch, modified potato starch, rice starch such as oryza sativa, or sodium hydroxypropyl starch phosphate, sclerotium gum, alginic derivatives such as alginic acid, sodium alginate or algin, xanthan gum, gum arabic, sterculia urens gum, chondrus crispus powder (carrageenan), gelan gum, guar gum, konjac such as konjac glucomannan, cellulose derivatives such as ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose or methylcellulose, cellulose, acacia senegal gum, cyamopsis tetragonoloba gum (guar), tragacanth gum, acacia gum, glucomannan, galactomannan, and mannan.

[0025] For the purposes of the present invention, the term "internal lubricator" means any compound that makes it possible to increase the internal sliding of the molecules of a mixture over each other. Advantageously, when it is present, the internal lubricator, due to its association with the other components and in the indicated contents, makes it possible to obtain a compact tablet that is sufficiently solid to be transported, while remaining soluble to transform into a gel after the addition of water. The at least one internal lubricant may be chosen from magnesium stearate, aluminum stearate and zinc stearate. Advantageously, the concentration of at least one internal lubricant in the dry composition may be chosen to obtain the aforementioned technical effect, depending on the other components of the dry composition. In particular, when it is present, the concentration may be between 0.0001% and 5.0% by weight relative to the total weight of said composition.

[0026] Advantageously, the at least one buffering and pH regulating agent, when present, makes it possible to control the pH of the reconstituted product for its use and its preservation for 6 months in its bathroom, at values ​​between 0 and 5% by weight relative to the total weight of said composition, for example between 0.1 and 4.5%, or between 0.5 and 4.0%, or between 0.7 and 3.0%. The buffering agent may for example be chosen from citric acid and sodium citrate. Advantageously, the concentration of at least one buffering agent in the dry composition may be chosen to obtain the aforementioned technical effect, depending on the other components of the composition. In particular, the concentration may be between 0 and 2.0% by weight relative to the total weight of said composition, for example approximately 1.0%.

[0027] Advantageously, the at least one preservative, when present, makes it possible to increase the microbiological and / or chemical stability of the dry composition and / or the compressed solid product and / or the cosmetic composition once it has been reconstituted. The at least one preservative may be chosen, for example, from sodium benzoate, potassium sorbate, sorbic acid and sodium dehydryoacetate. For example, the composition may comprise sodium benzoate and potassium sorbate as preservatives. Advantageously, the concentration of at least one preservative in the dry composition may be chosen to obtain the aforementioned technical effect, depending on the other components of the composition. In particular, when it is present, the concentration may be between 4.2 and 6.0% by weight relative to the total weight of said composition, for example between 4.4 and 6.0%, or between approximately 4.4 and 5.5%.

[0028] Advantageously, the at least one perfume may be any odorous material, having olfactory characteristics compatible with use in cosmetics, of natural and / or synthetic origin. It may thus make it possible to impart a pleasant odor to the cosmetic composition once it has been reconstituted. It may also improve the shaping and / or compacting of the dry composition by binding the powders to achieve the solid product and / or prevent the solid product from crumbling. Since the perfume may be solubilized in a solvent for perfumery raw materials, a granulation step is carried out before or after mixing with the other ingredients. The perfume may be any perfume known to those skilled in the art, for example honey, aloe vera, vanilla, flowers, coconut, exotic fruits, this list not being exhaustive. Depending on whether it is present or not in the dry composition, the perfume concentration may be between 0 (not included if the perfume is not present) and 7% by weight relative to the total weight of said composition, for example between 0.0001 and 5.0%, or between 0.0001 and 2.5% approximately.

[0029] Advantageously, the dry composition can be obtained by mixing the different ingredients. As indicated above, the process for preparing this composition can further comprise one or more steps of granulation of all or part of the ingredients, before or after their mixing, separately or together. The granulation of particles consists of increasing the size of these, with the aim of obtaining agglomerates. The traditional reasons for granulating a material include improving the flow and storage properties and increasing the intrinsic density of the particles, reducing dust formation or reducing the segregation of the materials. Thus, the granulation step can allow better flow of the powders, separately or together. The granulation step can be carried out by any method and means known to those skilled in the art, for example by means of a granulator.The granulation step or steps take place before or after the compaction step. Thus, the mixture responds favorably to the compression method. Advantageously, the ingredients and their different concentrations in the dry composition allow a flow of these suitable for industrial implementation, possibly after one or more granulation steps, dry and / or wet. The granulation step can be carried out by any method and means known to those skilled in the art, such as for example those described in the thesis of Amal TITA-GOLDSTEIN. Shaping of powders by compression: Influence of the process and the formulation on the control of usage properties. Thesis. 2013 ([2]). For example, when granulation takes place from powders, this can be carried out by means of a roller compactor accompanied by grinding or a tablet press accompanied by grinding.Alternatively, when granulation takes place from a mixture of powder and liquid, this may be carried out by means of a vertical mixer granulator and drying, a horizontal mixer granulator and drying, twin-screw extrusion and drying, an oscillating or centrifugal granulator and drying, or a fluidized air bed. In the preparation of the dry composition, the granulation step or steps take place before the compaction step.

[0030] Optionally, the composition may comprise ingredients not mentioned above, in order to improve properties already stated, or to obtain new ones. This may be, for example, bicarbonate and / or citric acid in order to obtain effervescent properties from the cosmetic composition once it has been reconstituted.

[0031] A second subject of the invention relates to a solid product obtained by pressing (also called compacting or compression) the dry composition as defined above. The pressing of the composition can be carried out by any suitable means, directly on the composition in powder form or after one or more granulation steps. The pressing can be carried out by any means known to those skilled in the art, for example by means of a tablet press. Optionally, a granulation step can be carried out after the compacting step in order to obtain a solid product in the form of granules. The shape and size of the solid product can be chosen according to the needs, for example tablets, granules, beads or rods. The thickness and / or circumference of the product can be for example between 0.5 cm and 5 cm, and its surface area can be for example between 1 cm2 and 20 cm2.Advantageously, the solid product of the invention may have sufficient hardness or mechanical strength to prevent it from breaking during handling or subsequent production steps, or to prevent it from being too brittle to be transported. The determination of the hardness of a solid product may be carried out by any method known to those skilled in the art, such as for example by measuring the intensity of the force applied diametrically to it to cause it to break by crushing, or by calculating the tensile strength of the product according to the recommendations of the American Pharmacopoeia (The United States Pharmacopeia Convention, USP 1217, May 1 2012, p. 868-870 ([3])).Advantageously, the ingredients and their different concentrations in the dry composition prevent the ingredients from sticking to the devices during compression, which allows for optimized industrial implementation of the pressure process, while allowing the production of a compact product that is sufficiently solid to be transported. Advantageously, the solid product is in tablet form.

[0032] Another subject of the invention relates to a process for preparing a cosmetic composition, comprising diluting the solid product or the dry composition as defined above, in 1 to 50 times its weight in water, for example in 10 to 50 times, or in 20 to 40 times. The dilution can be carried out in water, with stirring or without stirring. Advantageously, this can be carried out by the consumer, by placing the solid product in a container provided for this purpose, by adding water at a temperature between approximately 15°C and 50°C, directly onto the solid product or the dry composition, then optionally by shaking the container. Optionally, a dissolution time may be necessary so that complete dilution takes place. The water can be any water suitable for cosmetic, care or personal hygiene use. It can be tap water, purified water, a floral water, spring water, thermal water, sea water or mineral water.

[0033] Another subject of the invention relates to a cosmetic composition comprising from 1 to 50% by weight of a solid product or a solid composition as defined above, and from 50 to 99% by weight of water, relative to the total weight of said composition. The cosmetic composition is a textured composition, namely one which has a texture different from that of water, which may be, as indicated above, a gel texture, for example a micellar jelly, a foamy gelled texture, a white opaque gel resembling milk or even a syrupy texture such as honey. Optionally, the cosmetic composition may be effervescent if the composition in powder form contains ingredients allowing effervescence once the cosmetic composition is reconstituted.For example, the cosmetic composition may have a texture suitable for use chosen from a shower gel, a facial cleansing gel, a facial makeup remover gel, a shampoo and a hand washing gel.

[0034] Another subject of the invention relates to a use of the cosmetic composition, for cleaning and / or removing make-up from the skin, and / or the mucous membranes, and / or the appendages. For example, the use may be in a form chosen from that of a shower gel, a cleansing gel for the body, in particular for the skin of the face and / or the lips, a make-up removing gel for the skin of the face, a shampoo and a washing gel for the hands. Advantageously, it may be a rinsed or non-rinsed use.

[0035] Other advantages may still become apparent to those skilled in the art upon reading the examples below, given for illustrative purposes.

[0036] EXAMPLES

[0037] Example 1: Examples of cosmetic compositions in the form of micellar jellies

[0038] The powders presented in Tables 2 to 7 are mixed to obtain the composition in powder form. Then the composition is optionally compacted to obtain a tablet. Finally, water is added to the tablet or directly to the powder or granules if there has been no compacting, to reconstitute the textured cosmetic composition in the form of micellar jelly.

[0039] [Tables2] Description % reconstituted product 100.0000 Cocamidopropyl betaine (tego betain CK D MB) 0.1-3 Erylite (Erythritol) 1-10% Sodium benzoate 0.410 Anhydrous citric acid 0.070 Sorbitol 1-10% Agenajel 20.313 (hydroxypropyl starch phosphate) 1-10% Purified water qsp

[0040] TEST CONCLUSION: Good reconstitution, better powder flow

[0041] [Tables 3] Description % reconstituted product 100.0000 Cocamidopropyl betaine (tego betain CK D MB) 0.1-3 Erylite (Erythritol) 1-10% Sodium benzoate 0.410 Anhydrous citric acid 0.070 Sorbitol 1-10% Agenajel 20.313 (hydroxypropyl starch phosphate) 1-10% Magnesium stearate 0.110 Purified water qsp

[0042] TEST CONCLUSION: the powder dissolves well in purified water and the mixture remains very homogeneous once reconstituted. Very good compaction with very little sticking during compression

[0043] [Tables4] Description % reconstituted product 100.0000 Cocamidopropyl betaine (tego betain CK D MB) 0.1-3% Erythritol 1-10% Sorbitol 1-10% Potassium sorbate 0.100 Sodium benzoate 0.410 hydroxypropyl starch phosphate 1-10% Anhydrous citric acid 0.089 Magnesium stearate 0.350 TAP WATER qs

[0044] For this test, the compaction parameters appear in Tables 8 to 11 below. The compaction was carried out on STYL'One Nano (S / N: 2030), Euro D - fiat round 11.28mm, in a small rotary press, at a speed of 10 revolutions per minute.

[0045] [Tables5] First layer Dosage Main compression Tablet number Filling height (mm) Lower punch peak force (kN) Upper punch peak force (kN) Compression thickness (mm) Dwell time, according to force (ms) Compression duration, according to force (ms) 1 13.535 29.57 27.84 5.513 281 782 2 13.535 29.79 27.09 5.483 283 762 Mean 13.535 29.68 27.47 5.498 282 772 Maximum 13.535 29.79 27.84 5.513 283 782 Minimum 13.535 29.57 27.09 5.483 281 762 Standard deviation 0.000 0.11 0.37 0.015 1 10 Coefficient of variation (%) 0.00% 0.39% 1.36% 0.27% 0.27% 1.34%

[0046] [Tableauxô] Ejection Ejection force (N) Relaxation duration before éjection, according to force (ms) Ejection duration, according to force (ms) 159 780 189 215 781 187 187 780 188 215 781 189 159 780 187 28 1 1 15,09% 0,06% 0,53%

[0047] [Tableaux?] Energy Rearrangement energy (J) Plastic energy (J) Compression energy (J) Elastic energy (J) Flow energy (J) Ejection energy (J) 93,41 20,02 21,57 -1,66 0,66 93,54 19,16 20,74 -1,67 1,03 93,48 19,59 21,15 -1,66 0,84 93,54 20,02 21,57 -1,66 1,03 93,41 19,16 20,74 -1,67 0,66 0,06 0,43 0,42 0,00 0,18 0,07% 2,21% 1,98% -0,14% 21,60%

[0048] [Tableaux8] Measurements Weight (mg) Thickness (mm) Diameter (mm) Hardness (N) Disintegration duration (s) Friability (%) 800,0 800,0 800,0 0,0 0,00%

[0049] CONCLUSION ESSAI: Très bons résultats de compactage.

[0050] [Tableaux9] Description % reconstituted product Procedure 0.6480 Mix the powders together Cocamidopropyl betaine (tego betain CK D MB) 0.1-3 Erylite (Erythritol) 1 -10 Sorbitol 1 - 10 Potassium sorbate 0.100 Sodium benzoate 0.410 Agenajel 20.313 (hydroxypropyl starch phosphate) 1 - 10 Anhydrous citric acid 0.138 Perfume 0.1-0.5 Add perfume to the powders and shake PURIFIED WATER QSP Add water to reconstitute the semi-cellular jelly

[0051] Conclusion of the test: the compaction was conclusive, with the production of sticks of approximately 4-5 cm in height and 20 mm in diameter, with suitable hardness, which resisted the 90 cm drop test.

[0052] The addition of perfume made it possible to create a binder to further improve compaction.

[0053] LIST OF REFERENCES

[0054] 1. Assia Saker. Critical study of some experimental techniques for evaluating Powder flowability. Process engineering. University of Lorraine, 2018. French. ffNNT: 2018LORR0314ff. fftel-02130382.

[0055] 2. Amal TITA-GOLDSTEIN. Shaping of powders by compression: Influence of process and formulation on the control of usage properties. Thesis. 2013.

[0056] 3. The United States Pharmacopeia Convention, USP 1217, May 1 2012, p. 868-870.

Claims

Claims

1. A dry composition capable of being pressed, comprising: - at least one powdered polyol, - at least one surfactant, - at least one powdered gelling agent having flow properties corresponding to a Carr index of less than or equal to 25 and a Hausner ratio of less than or equal to 1.34, - optionally, at least one internal lubricator, - optionally, at least one preservative, - optionally, at least one buffering and pH regulating agent, - optionally, at least one perfume, said composition in the form of a pressable powder having flow properties corresponding to a Carr index of less than or equal to 25 and a Hausner ratio of less than or equal to 1.

34.

2. A composition according to claim 1, wherein said at least one powdered polyol is selected from erythritol, sorbitol and mannitol.

3. A composition according to claim 1 or 2, wherein at least one powdered surfactant is selected from cocamidopropyl betaine, sodium cocoyl glutamate, sodium methyl cocoyl taurate, sodium cocoyl glycinate and sodium cocoyl isethionate.

4. A composition according to any one of the preceding claims, wherein said at least one gelling agent is selected from starches such as hydroxypropyl starch phosphate, distarch phosphate, sodium carboxymethyl starch, modified potato starch, rice starch such as oryza sativa, or sodium hydroxypropyl starch phosphate, sclerotium gum, alginic derivatives such as alginic acid, sodium alginate or algin, xanthan gum, gum arabic, sterculia urens gum, chondrus crispus powder (carrageenan), gelan gum, guar gum, konjac such as konjac glucomannan, cellulose derivatives such as ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose or methylcellulose, cellulose, acacia senegal gum, cyamopsis tetragonoloba gum (guar), tragacanth gum, acacia gum, glucomannan,galactomannan, and mannan.,

5. Composition according to any one of the preceding claims, wherein said at least one buffering and pH regulating agent is chosen from citric acid and sodium citrate.

6. A composition according to any preceding claim, wherein said at least one internal lubricant is selected from magnesium stearate, aluminum stearate and zinc stearate.

7. A composition according to any preceding claim, wherein said at least one preservative is selected from sodium benzoate, potassium sorbate, sorbic acid and sodium dehydryoacetate.

8. Composition according to any one of the preceding claims, in which the concentration of at least one polyol is between 1 and 90% by weight relative to the total weight of said composition.

9. Composition according to any one of the preceding claims, in which the concentration of at least one surfactant is between 0.0001 and 10.0% by weight relative to the total weight of said composition.

10. Composition according to any one of the preceding claims, in which the concentration of at least one gelling agent is between 1 and 90% by weight relative to the total weight of said composition.

11. Composition according to any one of the preceding claims, wherein the concentration of at least one internal lubricator is between 0.0001 and 5.0% by weight relative to the total weight of said composition.

12. Solid product obtained by pressing the dry composition as defined in any one of claims 1 to 11.

13. A process for preparing a cosmetic composition, comprising diluting the solid product as defined in claim 12, or the dry composition as defined in any one of claims 1 to 11, in 1 to 50 times its weight in water.

14. Cosmetic composition comprising from 1 to 50% by weight of a dry composition as defined in any one of claims 1 to 11 or of a solid product as defined in claim 12, and from 50 to 99% by weight of water, relative to the total weight of said composition.

15. Use of a cosmetic composition as defined in claim 14, for cleaning and / or removing make-up from the skin, and / or mucous membranes, and / or appendages.