Carbomer-free gelled aqueous composition and associated manufacturing method

Abstract

The invention relates to a composition, in particular a cosmetic composition, comprising a fluid gelled aqueous phase comprising one salt and two hydrophilic gelling agents capable of gelling in the presence of the salt, wherein the composition lacks carbomer, the composition further comprises a fatty phase in the form of drops dispersed in the continuous aqueous phase, the fatty phase and the aqueous phase are immiscible, the drops having a diameter greater than or equal to 100 μm represent a volume greater than or equal to 60% of the total volume of the dispersed fatty phase and / or at least 60% of the drops have an average diameter greater than or equal to 100 μm. The invention can be used for the non-therapeutic treatment of a keratin material such as the skin and the hair.

Description

[0001] DESCRIPTION TITLE: Fluid gelled aqueous composition without carbomer and associated manufacturing method The present invention relates to a composition, in particular a cosmetic composition, comprising at least one fluid gelled aqueous phase free of carbomer and comprising at least one salt and at least two different ion-sensitive hydrophilic gelling agents, where appropriate in the form of an oil-in-water dispersion, as well as its manufacturing method. The manufacturing industry, like the cosmetics industry, is looking for natural or at least more eco-responsible alternatives for its formulations. Indeed, many raw materials used in compositions, in particular cosmetic compositions, are of petrochemical origin and / or do not have satisfactory biodegradability properties.This is particularly the case for hydrophilic gelling polymers of the crosslinked acrylic acid homopolymer type, in particular crosslinked with pentaerythritol allylic ethers or sucrose allylic ethers, known as carbomer (with the INCI name: CARBOMER), for example those marketed by Lubrizol under the name Carbopol. These raw materials have many qualities, such as transparency, non-sticky texture, suspending power, shear-thinning behavior and good temperature stability. These raw materials also have the ability to modulate the viscosity of the aqueous phase comprising them as a function of the pH.This feature is very interesting for the production of emulsions, since it allows the formation of drops of a fatty phase dispersed in a fluid continuous aqueous phase, before increasing the viscosity of the latter by raising the pH, in particular by adding sodium hydroxide, and thus achieving the desired texture and, in the case of oil-in-water dispersions, a viscosity sufficient to suspend the drops of dispersed fatty phase while remaining fluid. We can thus speak of an aqueous phase with a modular, evolving or activatable viscosity.This activatable character is particularly useful in the case of a microfluidic manufacturing process, as described in WO2015055748, which requires, before formation of the dispersion, to have a continuous aqueous phase with a viscosity compatible with the microfluidic constraints, said viscosity then being increased after formation of the dispersion so as to ensure satisfactory suspension of the drops of fatty phase dispersed in the continuous aqueous phase. Many attempts to substitute carbomers with natural hydrophilic gelling agents have been considered. However, this substitution is difficult due to the lower performance of these natural hydrophilic gelling agents in terms, in particular, of transparency and non-stickiness.While many natural hydrophilic gelling agents are temperature sensitive, few of them have the property of modulating their viscosity upwards as a function of a physicochemical parameter at room temperature, like carbomers. What is more, as soon as one seeks to obtain a gelled aqueous phase with a certain viscosity, gels based on natural hydrophilic gelling agent(s), in particular those capable of gelling in the presence of at least one salt, are very often firm and brittle, whereas gels based on carbomer(s) are flexible, fluid and slightly cohesive. By "slightly cohesive" we mean a gel that presents a finely tuned compromise between the ability to stick to itself, unlike a brittle gel, without this property being too exacerbated, otherwise we would end up with a gel that has an "egg white" type texture / behavior, which is not desirable.There is therefore a need for new gelled aqueous phase formulations with a modulatable viscosity, free of carbomer, and which after activation remain flexible, fluid and slightly cohesive, even at high viscosity. The invention therefore aims to provide an aqueous phase formulation with a modulatable viscosity, free of carbomer, and which after activation remains flexible, fluid and slightly cohesive, even at high viscosity. The invention further aims to provide such a formulation which, in the presence of a dispersed fatty phase, is capable of stably suspending drops of fatty phase at 50°C, and which is compatible with a microfluidic manufacturing process at room temperature.The present invention relates to a composition, in particular a cosmetic composition, comprising at least one fluid gelled aqueous phase (22) comprising at least one salt and at least two hydrophilic gelling agents capable of gelling in the presence of the salt(s), the composition being free of carbomer.The subject of the present invention is a composition, in particular a cosmetic composition, comprising at least one fluid gelled aqueous phase comprising at least one salt and at least two hydrophilic gelling agents capable of gelling in the presence of the salt(s), the composition being free of carbomer and further comprising a fatty phase in the form of drops dispersed in the continuous aqueous phase, the fatty phase and the aqueous phase being immiscible, the drops having a diameter greater than or equal to 100 μm represent a volume greater than or equal to 60%, or even greater than or equal to 70%, preferably greater than or equal to 80%, and better still greater than or equal to 90% of the total volume of the dispersed fatty phase and / or at least 60%, or even at least 70%, preferably at least 80%, and better still at least 90%, of the drops have an average diameter greater than or equal to 100 μm.By "Carbomer" is meant a compound with the INCI name CARBOMER, in particular a polymer chosen from crosslinked acrylic acid homopolymers, in particular crosslinked with pentaerythritol allylic ethers or sucrose allylic ethers, and mixtures thereof. Examples of Carbomers include those marketed by Lubrizol under the name Carbopol. By "fluid", for the purposes of the present invention, is meant a gelled aqueous phase which, at room temperature and atmospheric pressure, retains the ability to flow under its own weight. In particular, a gelled aqueous phase according to the invention retains the ability to conform to the shape of its container. In other words, a gelled aqueous phase according to the invention is not in the form of a solid block, and in particular is not in the form of a firm and brittle solid gel.By "hydrophilic", for the purposes of the present invention, is meant a gelling agent soluble or dispersible in water. Preferably, the hydrophilic gelling agents present in a gelled aqueous phase according to the invention are of natural origin and preferably biodegradable. Preferably, the gelled aqueous phase (22) of a composition according to the invention is natural, and preferably biodegradable. By "natural composition", for the purposes of the present invention, is meant a composition comprising a percentage of ingredients of natural origin greater than or equal to 95%, preferably greater than or equal to 96%, in particular greater than or equal to 97%, and better still greater than or equal to 98% according to the ISO 16128 standard. A percentage calculation method is described in FR3119317.A gelled aqueous phase according to the invention is advantageously slightly cohesive, namely that it presents an adjusted compromise between the capacity to stick to itself, unlike a brittle gel, without this property being too exacerbated, under penalty of being faced with a gel having a texture / behavior of the “egg white” type, which would not be desirable. Against all expectations, the inventors observed that the invention makes it possible to access fluid (or liquid) gels with properties similar to those observed with carbomer gels, in particular in terms of transparency and non-stickiness. In addition, the invention makes it possible to access suspensive liquid gels, which allows the manufacture of dispersions. As such, and unexpectedly, a gelled aqueous phase (22) according to the invention remains compatible with a microfluidic process at room temperature, without prejudice to the aforementioned advantages in terms of transparency and non-stickiness.An aqueous gel based on natural hydrophilic gelling agent(s) is generally in the form of a solid and brittle block, and therefore differs from a carbomer gel, in particular, by the absence of: - a fluid character, and - a capacity to restructure following shearing, i.e. the capacity to reform and return to its original state, which leads to a significant loss of viscosity. Against all expectations, the invention also makes it possible to access fluid aqueous gels with unexpected shear resilience, as described in more detail below.Furthermore, when the composition is applied to a keratin material, in particular to the skin, it is found that a gelled aqueous phase (22) according to the invention has a satisfactory sensoriality, of the "water-breaking" type, that is to say the sensation felt when an aqueous gel breaks under the applied pressure and releases the water it contains and gives a sensation of freshness and hydration. This sensoriality is unexpected because it is generally not or hardly achievable with natural hydrophilic gelling agents. This sensoriality is all the more unexpected since it is accompanied by satisfactory properties in terms of play-time and non-stickiness. Thus, upon application, in particular to a keratin material, a gelled aqueous phase (22) is advantageously provided with an average play-time of less than 3 minutes, preferably less than 2 minutes and more preferably less than 1 minute.Preferably, a composition according to the invention has a pH of between 3.0 and 6.5, preferably between 4.0 and 6.0 and better still between 5.0 and 6.0. Unless otherwise indicated, in all that follows, it is considered that the temperature is at room temperature (for example T=25°C ± 2°C) and atmospheric pressure (760 mm Hg, i.e. 1.013.10. 5 Pa or 10 13mbar). According to one embodiment, the gelled aqueous phase (22), or even a composition according to the invention, does not comprise a surfactant. Aqueous phase For the purposes of the present invention, the term "aqueous phase" is intended to denote either the aqueous phase (16) or the gelled aqueous phase (22). An aqueous phase according to the invention comprises water. In addition to distilled or deionized water, water suitable for the invention may also be natural spring water or floral water. According to one embodiment, the mass percentage of water in the aqueous phase is at least 30%, preferably at least 40%, in particular at least 50%, and better still at least 60%, in particular between 70% and 98%, and preferably between 75% and 95%, relative to the total mass of said continuous aqueous phase. Preferably, an aqueous phase according to the invention does not comprise a base, in particular NaOH.A composition according to the invention comprises at least one fluid, preferably natural, gelled aqueous phase (22) comprising at least two different ion-sensitive hydrophilic gelling agents. Hydrophilic gelling agents capable of gelling in the presence of at least one salt A hydrophilic gelling agent capable of gelling in the presence of at least one salt, also indifferently referred to as "ion-sensitive hydrophilic gelling agent", is an agent which makes it possible to modulate the viscosity and fluidity of the aqueous phase comprising it in the presence of at least one salt, and therefore the texture and / or the sensoriality of the composition. When the composition further comprises a dispersed fatty phase, a hydrophilic gelling agent capable of gelling in the presence of at least one salt is an agent which further makes it possible to suspend said drops in the continuous aqueous phase.For obvious reasons, it is appropriate to adapt the choice of hydrophilic gelling agents capable of gelling in the presence of at least one salt with regard to the salt(s) used. This adaptation falls within the general skills of the person skilled in the art. Preferably, the hydrophilic gelling agents capable of gelling in the presence of at least one salt are polyelectrolytes reactive to at least one salt, in particular in the presence of at least one monovalent or divalent ion such as, for example, K. + , N / A + , That ++ or Mg ++. The hydrophilic gelling agents capable of gelling in the presence of at least one salt may be chosen from natural polymers, biosynthetic polymers, modified polymers, and mixtures thereof, and preferably from natural polymers. Preferably, the hydrophilic gelling agents capable of gelling in the presence of at least one salt may be chosen from carrageenan, in particular kappa and iota-carrageenan; gellan gum, in particular Low Acyl gellan; alginate; pectin, in particular Low Methoxyl pectin; diutan gum; furcellaran; or one of their derivatives; and mixtures thereof. Preferably, the hydrophilic gelling agents capable of gelling in the presence of at least one salt may be chosen from alginate, gellan gum and / or carrageenan, and very particularly from gellan gum and iota-carrageenan.As carrageenan, mention may be made of the reference marketed by Cargill Beauty under the name Satiagel VPC 508 P (INCI: Iota-Carrageenan (and) Chondrus Crispus Extract). As gellan gum, mention may be made of the reference marketed by CP Kelco under the name Kelcogel CG LA or Kelcogel CG LA [E] (INCI: Gellan gum). As alginate, mention may be made of the reference marketed by Algaia under the name Algogel VCG 1561 or by Alchemy Ingredients under the name Sclerothix (INCI: Xanthan Gum (and) Sclerotium Gum (and) Algin). Advantageously, in a composition according to the invention, none of the hydrophilic gelling agents capable of gelling in the presence of at least one salt is chosen from algin or alginate. Advantageously, the hydrophilic gelling agents capable of gelling in the presence of at least one salt are not heat-sensitive hydrophilic gelling agents.The aqueous phase (22) advantageously comprises between 0.05% and 5%, preferably between 0.1% and 2.5%, better still between 0.25% and 1.5%, and most particularly between 0.4% and 1%, by weight of hydrophilic gelling agents capable of gelling in the presence of at least one salt relative to the total weight of the aqueous phase (16) or of the aqueous phase (22). According to a preferred embodiment, a composition according to the invention comprises at least: - a first hydrophilic gelling agent capable of gelling in the presence of at least one salt chosen from carrageenan, particularly kappa-carrageenan and iota-carrageenan, more particularly iota-carrageenan; and - at least one second hydrophilic gelling agent capable of gelling in the presence of the salt(s) chosen from gellan gum, alginate, pectin, diutan gum, furcellaran, or one of their derivatives, in particular gellan gum and / or alginate, and more particularly gellan gum.According to a preferred embodiment, a composition according to the invention comprises at least one first hydrophilic gelling agent capable of gelling in the presence of at least one salt chosen from carrageenan, and very particularly iota-carrageenan, and at least one second hydrophilic gelling agent capable of gelling in the presence of the salt(s) chosen from gellan gum and / or alginate, and preferably gellan gum. The aqueous phase (22) may comprise a “first hydrophilic gelling agent / second hydrophilic gelling agent” weight ratio of between 0.5 and 6, preferably between 0.75 and 4, and better still between 1 and 3. Salts A composition according to the invention comprises at least one salt which acts as a gelling activator for ion-sensitive hydrophilic gelling agents. The salt(s) can be added in the aqueous phase as such, i.e. in the form of crystals, or in the form of a pre-dispersion in an aqueous solution.Such a pre-dispersion may also be referred to interchangeably as "viscosity increasing solution (62)", "additional solution (62)", "additional solution", "solution (62)", "saline solution" or "BF". Obviously, the salt(s) is / are chosen from salts capable of reacting with hydrophilic gelling agents capable of gelling in the presence of at least one salt. In other words, the choice of salt(s) present should be adapted with regard to the hydrophilic gelling agents capable of gelling in the presence of at least one salt. By "capable of reacting with the gelling agent capable of gelling in the presence of at least one salt" is meant a salt capable of modulating, and in particular increasing, the viscosity of an aqueous phase comprising the hydrophilic gelling agents capable of gelling in the presence of at least said salt.In other words, the salt or the additional solution (62), added to the aqueous phase has the effect of interacting with the gelling agents capable of gelling in the presence of at least said salt, and thus of inducing the gelling of the aqueous phase and therefore an increase in its viscosity, whereby a gelled aqueous phase (22) is obtained. In the case where the composition further comprises a dispersed fatty phase, and is therefore in the form of a dispersion, the salt(s) or the additional solution (62) also has the effect of inducing the suspensivity of the gelled aqueous phase (22) with respect to the drops (12) of dispersed fatty phase, preferably over a period of time of at least 1 month, preferably at least 3 months, better still at least 6 months, and most particularly at least 12 months. For obvious reasons, the additional solution (62) is miscible with the aqueous phase.By "miscible" in the sense of the present invention, it is meant that the solubility of a first phase in a second phase is advantageously greater than 5% by mass. An additional solution (62) according to the invention is an aqueous solution which comprises at least water. In addition to distilled or deionized water, water suitable for the invention may also be natural spring water or floral water. According to one embodiment, the mass percentage of water in the additional solution (62) is at least 30%, preferably at least 40%, in particular at least 50%, and better still at least 60%, in particular between 70% and 98%, and preferably between 75% and 95%, relative to the total mass of said additional solution. A salt according to the invention comprises at least one monovalent or divalent ion such as, for example, K. + , N / A + , That ++ or Mg ++. Preferably, the salt may be chosen from a monovalent salt, preferably chosen from sodium salts such as sodium chloride, potassium salts such as potassium chloride; and / or multivalent, in particular divalent, preferably the salt may be chosen from calcium salts such as calcium chloride, calcium gluconate, calcium citrate, calcium carbonate, magnesium salts such as magnesium sulfate, and mixtures thereof, and preferably the salt is a monovalent salt, in particular sodium chloride. Advantageously, the additional solution (62) does not comprise carbomer. Advantageously, the additional solution (62) does not comprise base, in particular NaOH. Thus, an additional solution (62) according to the invention is different from a viscosity increasing solution as described in WO2015055748.Of course, a person skilled in the art will take care to choose the salt(s) and / or their quantity(ies) with regard to the hydrophilic gelling agents capable of gelling in the presence of at least one salt, the solubility limit of the salt(s) considered, and also in such a way that the advantageous properties of a composition according to the invention are not or are not substantially altered by the envisaged addition. These adjustments fall within the general knowledge of a person skilled in the art. The aqueous phase (22) advantageously comprises between 0.1% and 20%, preferably between 0.4% and 15%, better still between 0.8% and 10%, and very particularly between 1% and 5%, by weight of salt(s) relative to the total weight of the aqueous phase (22). The additional solution (62) may advantageously comprise between 1% and 40%, preferably between 4% and 30%, and better still between 8% and 10%, by weight of salt(s) relative to the total weight of the solution (62).The weight ratio of “hydrophilic gelling agents capable of gelling in the presence of at least one salt / salt(s), in particular multivalent salt(s), and very particularly divalent salt(s)”, is advantageously between 0.1 and 20, better still between 0.5 and 20, in particular between 1 and 20, preferably between 2 and 15, better still between 5 and 10, or even between 0.1 and 5. The weight ratio of “hydrophilic gelling agents capable of gelling in the presence of at least one monovalent salt / salt(s)” is advantageously between 0.1 and 3, in particular between 0.1 and 2, very particularly between 0.1 and 1, preferably between 0.25 and 0.75, and better still between 0.25 and 0.5. The gelled aqueous phase (22) preferably has a viscosity, as measured at 25°C and under a shear stress of 2 s. -1, comprised from 500 mPa.s to 50000 mPa.s, preferably from 1000 mPa.s to 25000 mPa.s, in particular from 2000 mPa.s to 15000 mPa.s, and in particular from 5000 mPa.s to 10000 mPa.s. The viscosity is measured at room temperature and at room pressure, by the method described in WO2017046305. The aqueous phase (22) is a non-Newtonian fluid. It is a shear-thinning fluid. Preferably, the gelled aqueous phase (22) of a composition according to the invention is transparent or at least translucent. The property of transparency or translucency is determined according to the protocol described in the examples below.A gelled aqueous phase (22) of a composition according to the invention is further advantageous in that it has unexpected properties in terms of shear resilience, also referred to as "viscosity regeneration time" or "reconstruction time", i.e. the time required for the sample to regain a viscosity at least equal to 75% of the original viscosity. Method for measuring the regeneration percentage: All measurements are carried out with a Ta instrument DHR10 rheometer equipped with a 40mm diameter mobile forming a 1° cone - the measuring gap being 29µm. The measurements are carried out at 18°C, the temperature being controlled by a Peltier device. The thixotropic behavior is measured using a 3ITT (3- interval-thixotropy-test) test protocol.This protocol consists of successively subjecting the sample to 3 different shear stages, namely: • First stage (= Reference interval): the sample is subjected to a low shear of 0.1 s. -1 for 30 seconds with a measurement of one second per point, by which its viscosity at rest is evaluated; this measurement will serve as a reference for the test. • Second stage (= high shear interval): the sample is subjected to a high shear of 300 s -1 for 30 seconds, which will destructure the sample, with a measurement of one second per point. • Third stage (= regeneration interval): the sample is subjected to the original shear, namely 0.1 s -1for 300 seconds with a measurement of one second per point. The time required for the sample to regain a viscosity at least equal to 75% of the original viscosity is called “reconstruction time”. Thus, an aqueous phase (22) according to the invention advantageously has a percentage of regeneration of its viscosity of at least 75%, preferably at least 80%, in particular at least 85%, or even at least 90%, after 30 seconds in the third regeneration interval according to the method described above. An aqueous phase (22) according to the invention can therefore be described as shear resilient. The aqueous phase (16), when it comprises at least one salt, and the gelled aqueous phase (22) may be in the form of a dispersion of gel microfragments. This particular structure is then microscopically in the form of gel microfragments and macroscopically in fluid form. By “microfragment”, within the meaning of the present invention,is intended to denote gel fragments of a size less than 1 mm, preferably less than 0.5 mm, or even less than 0.1 mm, in particular between 10 and 100 microns, preferably between 25 and 50 microns. Preferably, a microfragment is a microscopic fragment. The dispersion of gel microfragments may also be referred to as a “microgel solution”. Against all expectations, when this microgel solution is injected into a microfluidic device, it remains sufficiently fluid to generate drops of dispersed fatty phase within it and allow these drops to structure themselves under moderate flow with low shear stress, thus avoiding their deformation and / or fragmentation. Finally,this microgel solution is advantageous because it makes it possible to achieve viscosities that would not be possible to achieve with electrolyte-sensitive gelling agents capable of forming a flexible and elastic gel. The presence of a microgel structure also makes it less sensitive to temperature and provides a suspending power. Advantageously, the gelled aqueous phase (22), or even a composition according to the invention, does not comprise cellulose or one of its derivatives, and in particular does not comprise: - preBIULIN C90 (INCI: Cellulose Gum (and) Xanthan Gum (and) Inulin (and) Cellulose (and) Glucose (and) Fructose); - Sucraclear HC-31 (INCI: Chondrus Crispus Powder (and) Cellulose Gum (and) Ceratonia Siliqua (Carob) Gum (and) Glucose); - Sucraclear V2 (INCI: Cellulose Gum, Chondrus Cripsus Powder (Carageenan), Ceratonia Siliqua Gum, Glucose); and - their mixtures. Dispersion According to a particular embodiment,a composition according to the invention may further comprise a fatty phase (14) in the form of drops (12) dispersed in the continuous aqueous phase (22), the fatty phase (14) and the aqueous phase (22) being immiscible. By "immiscible" within the meaning of the present invention, it is meant that the solubility of a first phase in a second phase is advantageously less than 5% by mass. In the context of the present invention, the aforementioned dispersions may be designated indifferently by the term "emulsions". According to a first embodiment variant, a dispersion according to the invention may be a simple emulsion, and in particular a direct emulsion of the oil-in-water type. According to a second embodiment variant, a dispersion according to the invention may be a multiple emulsion and therefore comprise at least a third phase (19) (or internal dispersed phase),in which case the fatty phase (14) (or intermediate dispersed phase) is located between the third phase (19) and the continuous aqueous phase (22). According to a first embodiment, the fatty phase (14) and the third phase (19) are substantially immiscible and the fatty phase (14) and the aqueous phase (22) are substantially immiscible. In particular, a multiple dispersion according to the invention is of the type: - water-in-oil-in-water, or - oil-in-oil-in-water, in which case the third phase (19) and the fatty phase (14) comprise substantially immiscible oils. By "substantially immiscible oils" or "immiscible oils" within the meaning of the present invention,it is intended to denote that the mixture of these two oils does not lead to a homogeneous single-phase solution. A person skilled in the art will be able to adjust the choice of oils to satisfy the aforementioned “immiscible” criterion. Oils which are immiscible with each other are described in particular in FR1752204. According to a second embodiment, the fatty phase (14) and the third phase (19) are miscible in which case the multiple emulsion is a transient stage which will evolve towards a definitive stage of simple emulsion. Thus, in a transient multiple emulsion, the third phase (19) is oily and is miscible with the fatty phase (14). Advantageously, the gelled aqueous phase (22) of the dispersion has a flow threshold value adapted to ensure the suspension (or suspensivity) of the drops of fatty phase (14) dispersed over a period of time greater than or equal to 1 month, preferably greater than or equal to 3 months,or even greater than or equal to 6 months at a temperature of 50°C. In addition to the associated visual effect, this stable suspensive character at 50°C makes it possible to ensure further improved kinetic stability of the dispersion, in particular to prevent / limit the phenomena of coalescence of the drops between them and / or creaming and / or sedimentation of the drops in the continuous phase, and therefore to effectively prevent any alterations to the visual rendering of a dispersion according to the invention. Thus, the aqueous phase (22) preferably has a flow threshold greater than or equal to 0.1 Pa, in particular greater than or equal to 1 Pa, and preferably between 0.25 Pa and 100 Pa, in particular between 1 Pa and 75 Pa, very particularly between 2 Pa and 50 Pa, or even between 5 Pa and 25 Pa, and better still between 10 Pa and 20 Pa. The flow threshold can be evaluated by means of a shear rate scanning protocol using a rheometer (reference TA Instruments), according to the method described in HA Barnes,A Handbook of Elementary Rheology; Institute of Non-Newtonian Fluid Mechanics. University of Wales, 2000 or in http: / / www.tainstruments.com / pdf / literature / RH025.pdf. A composition according to the invention in the form of a dispersion may comprise from 1% to 60%, in particular from 5% to 50%, preferably from 10% to 40%, and better still from 15% to 30%, by weight of fatty phase (14) relative to the total weight of the composition. Preferably, the fatty phase of the dispersion according to the invention does not comprise a lipophilic cationic polymer, in particular amodimethicone (or amino-silicone). The fatty phase (14) (or oily phase) comprises at least one oil and optionally at least one lipophilic gelling agent, preferably heat-sensitive. Oils The term "oil" means a fatty substance that is liquid at room temperature. Examples of oils that can be used in a dispersion of the invention include: - hydrocarbon oils of plant origin, such as hydrogenated jojoba oil,hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut oil; - hydrocarbon oils of animal origin, such as perhydrosqualene and squalane; - synthetic esters and ethers, in particular of fatty acids, such as oils of formulas R1COOR2 and R1OR2 in which R1 represents the residue of a C8 to C29 fatty acid, and R2 represents a branched or unbranched C3 to C30 hydrocarbon chain, such as for example Purcellin oil, isononyl isononanoate, isodecyl neopentanoate, isopropyl myristate, 2-ethylhexyl palmitate, 2-octyldodecyl stearate, 2-octyldodecyl erucate, isostearyl isostearate; hydroxylated esters such as isostearyl lactate, octylhydroxystearate, octyldodecyl hydroxystearate, diisostearyl malate, triisocetyl citrate, fatty alcohol heptanoates, octanoates, decanoates; polyol esters, such as propylene glycol dioctanoate,neopentyl glycol diheptanoate and diethylene glycol diisononanoate; and pentaerythritol esters such as pentaerythrityl tetrabehenate (DUB PTB) or pentaerythrityl tetraisostearate (Prisorine 3631); - linear or branched hydrocarbons, of mineral or synthetic origin, such as paraffin oils, volatile or not, and their derivatives, petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parleam oil; - silicone oils, such as volatile or not polymethylsiloxanes (PDMS) with a linear or cyclic silicone chain, liquid or pasty at room temperature, in particular cyclopolydimethylsiloxanes (cyclomethicones) such as cyclohexasiloxane and cyclopentasiloxane; polydimethylsiloxanes (or dimethicones) containing alkyl, alkoxy or phenyl groups, pendant or at the end of the silicone chain, groups having from 2 to 24 carbon atoms; phenylated silicones such as phenyltrimethicones,phenyldimethicones, phenyltrimethylsiloxydiphenylsiloxanes, diphenyldimethicones, diphenylmethyldiphenyl trisiloxanes, 2-phenylethyltrimethylsiloxysilicates, and polymethylphenylsiloxanes; - liquid fatty alcohols having from 8 to 26 carbon atoms, such as octyldodecanol, oleyl alcohol, isostearyl alcohol or mixtures thereof; - partially hydrocarbon and / or silicone fluorinated oils such as those described in JP-A-2-295912; - and mixtures thereof. According to a preferred embodiment, the oil is chosen from the group consisting of hydrocarbon oils of vegetable origin, synthetic esters and ethers, fatty alcohols having from 8 to 26 carbon atoms, and mixtures thereof. Advantageously, the fatty phase does not comprise hydrocarbon oil of animal origin, linear or branched hydrocarbon, silicone oil, fluorinated oil, and mixtures thereof. According to a preferred embodiment,the fatty phase does not comprise silicone oil, and preferably does not comprise polydimethylsiloxane (PDMS). A person skilled in the art will be able to adjust the nature and / or the content of oil(s), in particular to ensure satisfactory kinetic stability of the dispersion according to the invention and to retain the aforementioned advantageous technical effects. According to one embodiment, a dispersion according to the invention comprises between 30% and 100%, in particular between 40% and 90%, preferably between 50% and 80%, and in particular between 60% and 70%, by weight of oil(s) relative to the total weight of the fatty phase. Lipophilic gelling agents A lipophilic gelling agent, i.e. soluble or dispersible in the fatty phase, may be chosen from organic or mineral, polymeric or molecular gelling agents; solid fatty substances at room temperature and pressure, in particular chosen from waxes, pasty fatty substances, butters; and their mixtures,and preferably among polymeric gelling agents. Such lipophilic gelling agents are described in particular in WO2019002308. Among the lipophilic gelling agents that can be used in the present invention, mention may be made of dextrin and fatty acid esters, such as dextrin palmitates, dextrin myristates, dextrin palmitates / ethylhexanoates and mixtures thereof. Mention may in particular be made of dextrin and fatty acid esters marketed under the names Rheopearl® KL2 (INCI name: dextrin palmitate), Rheopearl® TT2 (INCI name: dextrin palmitate ethylhexanoate), and Rheopearl® MKL2 (INCI name: dextrin myristate) by the company Miyoshi Europe, also dextrin palmitate marketed by The Innovation Company. Among the lipophilic gelling agents, we can also cite: - the triester of glycerin and hydroxystearic acid, such as that marketed under the name THIXCIN® R from Elementis Specialties (INCI name: Trihydroxystearin),- polyurethane-79, such as that marketed under the name OILKEMIA™ 5S polymer by the company Lubrizol (INCI name: Caprylic / Capric Triglyceride (and) Polyurethane- 79); - the crosslinked polymer hexamethylene diisocyanate (HDI) / trimethylol hexyllactone, such as those marketed under the name Oilkemia™ 5S CC polymer (INCI name: INCI: Caprylic / Capric Triglyceride (and) Hydrogenated Poly(C6-20 Olefin) (and) HDI / Trimethylol Hexyllactone Crosspolymer), or under the name Oilkemia™ Alpha POF polymer (INCI name: Hydrogenated Poly(C6-20 Olefin) (and) HDI / Trimethylol Hexyllactone Crosspolymer); - castor oil / isophorone diisocyanate (IPDI) copolymer, such as those marketed under the name Estogel M by the company PolymerExpert (INCI name: CASTOR OIL / IPDI COPOLYMER & CAPRYLIC / CAPRIC TRIGLYCERIDE), under the name EMC30 (INCI name: Caprylic / Capric Triglyceride (and) Castor Oil / IPDI Copolymer),or under the name EMI 30 (INCI name: Isononyl Isononanoate (and) Castor Oil / IPDI Copolymer (and) Caprylic / Capric Triglyceride); - the hydrogenated castor oil / sebacic acid copolymer (INCI name: Hydrogenated Castor Oil / Sebacic Acid Copolymer), as well as its derivatives, notably marketed respectively under the names Estogel Green (or Estogel G) and Estogel Green 40 by PolymerExpert, and mixtures thereof. Advantageously, a lipophilic gelling agent is a thermosensitive gelling agent. Advantageously, a lipophilic gelling agent is a thixotropic gelling agent or one capable of giving the fatty phase thixotropic behavior. Such a thixotropic gelling agent is notably chosen from pyrogenic silicas which may be hydrophobically treated. According to the invention, a dispersion according to the invention may comprise from 0.5% to 30%, preferably from 1% to 25%, in particular from 1.5% to 20%, better still from 2% to 15%, and very particularly from 5% to 12%,by weight of lipophilic gelling agent(s) relative to the total weight of the fatty phase (14). Drops The dispersed fatty phase (14) of a dispersion according to the invention is in the form of drops, preferably macroscopic, i.e. visible to the naked eye. The drops (12) are advantageously substantially spherical. In the remainder of this description, the drops (12) of fatty phase (14) may be referred to interchangeably as “drops” or “drop (G1)”. Preferably, the drops (12) having a diameter greater than or equal to 100 μm represent a volume greater than or equal to 60%, or even greater than or equal to 70%, preferably greater than or equal to 80%, and better still greater than or equal to 90% of the total volume of the dispersed fatty phase and / or at least 60%, or even at least 70%, preferably at least 80%, and better still at least 90%, of the drops have an average diameter greater than or equal to 100 μm. Preferably this diameter is greater than or equal to 150 μm,better greater than or equal to 200 μm, in particular greater than or equal to 250 μm, preferably greater than or equal to 300 μm, in particular greater than or equal to 400 μm and better still greater than or equal to 500 μm. Preferably, the diameter of the drops (G1) is between 250 microns and 3000 microns, preferably between 500 microns and 2000 microns, or even between 750 microns and 1500 microns. Thus, in a dispersion according to the invention, the phases constituting it form a macroscopically inhomogeneous mixture. Advantageously, the drops advantageously have an apparent monodispersity (i.e. they are perceived to the eye as spheres of identical diameter). Preferably, the dispersions of the invention consist of a population of monodisperse drops, in particular such that they have an average diameter of from 100 µm to 3000 µm, in particular from 500 µm to 3000 µm and a coefficient of variation Cv of less than 10%,or even less than 3%. In the context of the present description, the term "monodispersed drops" means that the population of drops of the dispersion according to the invention has a uniform size distribution. Monodispersed drops have good monodispersity. Conversely, drops having poor monodispersity are said to be "polydispersed". According to one embodiment, the average diameter of the drops is for example measured by analyzing a photograph of a batch consisting of N drops, by image processing software (Image J). Typically, according to this method, the diameter is measured in pixels, then reported in µm, depending on the dimension of the container containing the drops of the dispersion. Preferably, the value of N is chosen to be greater than or equal to 30, so that this analysis reflects in a statistically significant manner the distribution of diameters of the drops of said emulsion. N is advantageously greater than or equal to 100,especially in the case where the dispersion is polydisperse. We measure the diameter Di of each drop, then we obtain the average diameter by calculating the arithmetic mean of these values: [Math 1], From these Di values, we can also obtain the standard deviation ^ of the diameters of the drops of the dispersion: [Math 2] The standard deviation ^ of a dispersion reflects the distribution of diameters D i drops of the dispersion around the mean diameter. Knowing the mean diameter and the standard deviation ^ of a dispersion, we can determine that we find 95.4% of the population of drops in the diameter interval [Math 3] and that we find 68.2% of the population in the interval [Math 4] To characterize the monodispersity of the dispersion according to this embodiment of the invention, the coefficient of variation can be calculated: [Math 5] This parameter reflects the distribution of the diameters of the drops as a function of their average diameter. The coefficient of variation Cv of the diameters of the drops according to this embodiment of the invention is less than 10%, preferably less than 5%, or even less than 3%. Alternatively, the monodispersity can be demonstrated by placing a dispersion sample in a flask with a constant circular section. Gentle stirring by rotation of a quarter turn over half a second around the axis of symmetry passing through the flask, followed by a rest of half a second is carried out, before repeating the operation in the opposite direction, four times in a row. The drops of the dispersed phase are organized in a crystalline form when they are monodisperse. Thus, they exhibit a stacking following a pattern repeating itself in the following three dimensions. It is then possible to observe a regular stacking which indicates good monodispersity,an irregular stacking reflecting the polydispersity of the dispersion. Such a monodisperse character results directly from the microfluidic manufacturing method according to the invention. As indicated previously, the drops can be single-phase or multi-phase. For example, they comprise a core (which comprises at least the fatty phase), optionally a shell (or envelope or membrane) completely encapsulating the core, the core itself being able to comprise one or more phases. According to a first embodiment, a drop according to the invention is a solid (or single-phase) particle, which can be referred to indifferently by the terms “bead” or “ball”. According to a second embodiment, a drop according to the invention is a core / shell type particle. Thus, a core / shell type drop is a capsule which comprises a core, preferably liquid or at least partly gelled or at least partly thixotropic, and a shell, completely encapsulating said core,said core being single-phase, and therefore based on the fatty phase. In the case where the drops are multi-phase, a drop can then be a solid particle or of the core / shell type comprising an intermediate drop (G1) of an intermediate fatty phase (14), this intermediate phase being placed in contact with the aqueous phase or the shell (when present), and at least one, preferably a single, internal drop (G2) of an internal phase (or third phase 19) arranged in the intermediate drop (G1). According to this variant, the intermediate fatty phase (14) advantageously comprises at least one lipophilic gelling agent, in particular as defined previously, in particular to improve the suspension of the drop(s) (G2) arranged in the drop (G1) and thus prevent / avoid the phenomena of creaming or sedimentation of the drop(s) (G2). Preferably,the dispersed fatty phase is transparent or at least translucent. According to a particular embodiment: - the continuous aqueous phase of a dispersion according to the invention may itself be in the form of a direct emulsion comprising a fatty phase dispersed in the form of drops (G3) whose size is preferably smaller than the size of the drops (G1), or even the drops (G2); and / or - the dispersed fatty phase, or even the intermediate fatty phase and / or the internal phase in the case of a multiple dispersion (or complex drop) as defined above, may be in the form of a direct or inverse emulsion comprising drops (G4) and / or (G5), the size of the drops (G4) and / or (G5) necessarily being smaller than the size of the drops (G1), or even the drops (G2). The drops (G3) and / or (G4) and / or (G5) are preferably microscopic, i.e. not visible to the naked eye and in particular of a size less than 100 µm,preferably less than 20 µm, and better still less than 10 µm. In other words, the drops (G3) and / or (G4) and / or (G5) are different and independent from the drops (G1), or even from the drops (G2). The drops (G1) of a dispersion according to the invention are advantageously devoid of a shell, in particular of a polymeric membrane or formed by interfacial polymerization. In particular, the drops (G1) of a dispersion according to the invention are not stabilized using a coacervate membrane (anionic polymer (carbomer) / cationic polymer (amodimethicone) type). In other words, the contact between the continuous aqueous phase and the dispersed fatty phase is preferably direct. According to another embodiment, the drops (G1) comprise a shell. The presence of a shell advantageously makes it possible to reinforce the kinetic stability of the drops (G1), and therefore of the dispersion. Additional compound(s) A composition according to the invention, and in particular the aqueous phase,the fatty phase, the additional solution (62) and / or the third phase (19), may further comprise at least one additional compound different from the aforementioned ion-sensitive hydrophilic gelling agents, salts, lipophilic gelling agents and oils. A composition according to the invention, and in particular the aqueous phase, the fatty phase, the additional solution (62) and / or the third phase (19), may thus further comprise powders; coloring agents, in particular chosen from water-soluble or insoluble, fat-soluble or insoluble, organic or inorganic coloring agents, materials with an optical effect, liquid crystals, and mixtures thereof; fillers, in particular pigments and / or nacres, in particular as described in FR3067930; emulsifying and / or non-emulsifying silicone elastomers,in particular as described in EP2353577; texturizing agents; thermosensitive hydrophilic gelling agents; non-ionosensitive and non-thermosensitive hydrophilic gelling agents; glycerin; preservatives; humectants; stabilizers; pH stabilizing agents, in particular a pH buffer (e.g. HEPES, PBS); chelators; emollients; retarding agents; etc. or any usual cosmetic additive; and mixtures thereof. In particular, the aqueous phase (22) may further comprise at least one thermosensitive hydrophilic gelling agent. By "thermosensitive gelling agent" is meant a gelling agent which makes it possible to change the phase comprising it from a liquid form to a solid form in the form of a gel block, this gelling being reversible under the effect of temperature. In particular the gelling agent, and mechanically the phase comprising it,is solid at room temperature and liquid at a temperature above 40°C, preferably above 50°C. Preferably, the thermosensitive hydrophilic gelling agent is chosen from natural polymers, biosynthetic polymers, modified polymers, and mixtures thereof, preferably natural polymers, and preferably is chosen from agar, gelatin, and mixtures thereof. Preferably, the thermosensitive hydrophilic gelling agent is not a hydrophilic gelling agent capable of gelling in the presence of at least one salt. Preferably, a composition according to the invention does not comprise a thermosensitive hydrophilic gelling agent, and in particular does not comprise agar, gelatin, and mixtures thereof. Advantageously, the gelled aqueous phase (22) comprises between 0% and 5%, preferably between 0.01% and 2.5%, better still between 0.05% and 1%, and very particularly between 0.08% and 0.5%,by weight of heat-sensitive hydrophilic gelling agent(s) relative to the total weight of the gelled aqueous phase (22). The aqueous phase (22) may further comprise at least one non-ionosensitive and non-heat-sensitive hydrophilic gelling agent, in particular chosen from a vegetable gum, and preferably chosen from xanthan gum, sclerotium gum, cellulose or one of its derivatives, starch or one of its derivatives, locust bean gum, acacia gum, Alcasealane, lambda carrageenan, glucomannan, tamarind gum, konjac gum, and mixtures thereof. By "non-heat-sensitive gelling agent" is meant a gelling agent whose gelling capacity is not, or only slightly, affected by the effect of temperature. By "non-ionosensitive gelling agent" is meant a gelling agent whose gelling capacity is not, or only slightly,modified in the presence of a salt. The aqueous phase may further comprise at least one retarding agent, in particular when the composition according to the invention is in the form of a dispersion. The presence of such a retarding agent in the aqueous phase (16a), (16b) or (22) depending on the manufacturing process chosen advantageously makes it possible to reduce the gelling kinetics of the ion-sensitive hydrophilic gelling agents, and thus to prevent blockages at the level of the microfluidic channels and therefore mechanically to improve the stability and robustness of the manufacturing process. A retarding agent is preferably a chelating agent, in particular chosen from at least one organophosphate, and better still is tetrasodium pyrophosphate. Also, a composition according to the invention, and in particular the aqueous phase, the fatty phase, the additional solution (62) and / or the third phase (19),may also comprise at least one biological and / or cosmetic active ingredient chosen from moisturizing agents, healing agents, depigmenting agents, UV filters, desquamating agents, antioxidant agents, active ingredients stimulating the synthesis of dermal and / or epidermal macromolecular agents, dermo-contracting agents, antiperspirant agents, soothing agents, anti-aging agents, perfuming agents, anticoagulants, anti-thrombogenic agents, anti-mitotic agents, anti-proliferation, anti-adhesion, anti-migration agents, cell adhesion promoters, growth factors, antiparasitic molecules, anti-inflammatories, angiogenic agents, angiogenesis inhibitors, vitamins, hormones, proteins, antifungals, antimicrobial molecules, antiseptics or antibiotics, and mixtures thereof. Such assets are described in particular in FR 1558849. Of course,the skilled person will take care to choose the possible additional compound(s) and / or their quantity in such a way that the advantageous properties of a composition according to the invention are not or not substantially altered by the envisaged addition. Also, the skilled person will take care to choose the nature and / or the quantity of additional compound(s) according to the aqueous or fatty nature of the phase considered and / or with regard to the method of manufacturing the dispersion. These adjustments fall within the general knowledge of the skilled person. Process The manufacture of a composition according to the invention, when devoid of a fatty phase and / or when the manufacturing method does not rely on the implementation of a microfluidic device, falls within the general knowledge of the skilled person. A composition according to the invention, when in the form of a dispersion, can be obtained from different manufacturing processes,in particular microfluidic. A microfluidic device suitable for the manufacture of a composition according to the invention in the form of a dispersion is illustrated in particular in Figure 1. Thus, according to a first embodiment, the method for manufacturing a composition according to the invention comprises at least the steps consisting of: (a1) having a gelled aqueous phase (22) in a liquid form comprising at least one salt and at least two hydrophilic gelling agents capable of gelling in the presence of the salt(s); (b1) having a fatty phase (14) in a fluid (or liquid) form, substantially immiscible with the gelled aqueous phase (22), and comprising at least one oil and optionally at least one lipophilic gelling agent; and (c1) forming drops (12) of fatty phase (14) in the gelled aqueous phase (22); (d1) flow in a circulation conduit (38),drops (12) in the gelled aqueous phase (22); and (e1) recovery of a composition according to the invention in a container (33). A manufacturing process according to this first embodiment is therefore advantageously devoid of additional solution (62). Against all expectations, the properties of the aqueous phase of step (a1) allow steps (c1) and (d1) to be carried out at room temperature, which is advantageous from an economic and ecological point of view, and even more so when reasoning on an industrial scale. According to a variant, the manufacturing process according to this first embodiment may further comprise the injection of an additional solution (62) similar to step (g2) of the manufacturing process according to the second embodiment described below. This variant is in particular possible when the gelled aqueous phase (22) comprises only a portion of the salt(s),in which case the additional solution (62) comprises the other part of the salt(s). According to this variant, the salt(s) present in the gelled aqueous phase (22) and in the additional solution (62) may be identical or different. Such a variant is particularly advantageous in that it can improve the stability and robustness of the manufacturing process, and in particular further improve the good formation of the drops. When the salts are different, such a variant is further advantageous in that it allows the use of two hydrophilic gelling agents capable of gelling respectively in the presence of different salts, which thus offers more flexibility as to the choice of these hydrophilic gelling agents capable of gelling in the presence of salt(s). According to this first embodiment,the two hydrophilic gelling agents capable of gelling in the presence of the salt(s) are advantageously chosen from iota-carrageenan and gellan gum. According to this first embodiment, the preparation of the gelled aqueous phase (22) according to step (a1) may comprise at least the following steps: (a1.1) having an aqueous phase comprising at least two hydrophilic gelling agents capable of gelling in the presence of the salt(s); (a1.2) adding the salt(s) to the aqueous phase of step (a1.1); (a1.3) ensuring a return to room temperature of the mixture obtained in step (a1.2) simultaneously and / or consecutively to step (a1.2); and (a1.4) shearing the mixture obtained in step (a1.3), simultaneously and / or consecutively to step (a1.3), whereby an aqueous phase (22) is obtained which, at room temperature, is microscopically in the form of gel microfragments and macroscopically in the form of a liquid (or fluid) gel. Preferably, step (a1.1),or even step (a1.2), is / are carried out at a temperature above room temperature, in particular at a temperature between 40°C and 100°C, or even between 50°C and 90°C, and especially between 60°C and 80°C. This increase in temperature makes it possible to improve the incorporation of the two hydrophilic gelling agents capable of gelling in the presence of the salt(s), or even the salt(s), in the aqueous phase. Note that the order of incorporation of the two hydrophilic gelling agents capable of gelling in the presence of the salt(s) and the salt(s) in the aqueous phase is not important. Thus, the protocol for preparing the gelled aqueous phase (22) described above is presented for illustrative purposes only. According to a second embodiment, the method for manufacturing a composition according to the invention comprises at least the steps consisting of: (a2) having an aqueous phase (16a) in a liquid form comprising at least water and at least two,preferably two, raw materials chosen from: - at least one first hydrophilic gelling agent capable of gelling in the presence of at least one salt; - at least one second hydrophilic gelling agent capable of gelling in the presence of at least one salt; and - at least one salt; (b2) having an aqueous phase (16b) in a liquid form comprising at least water and at least the third raw material from: - at least one first hydrophilic gelling agent capable of gelling in the presence of at least one salt; - at least one second hydrophilic gelling agent capable of gelling in the presence of at least one salt; and - at least one salt; (c2) having a fatty phase (14) in a liquid form,substantially immiscible with the aqueous phase (16a) and the aqueous phase (16b) and comprising at least one oil and optionally at least one lipophilic gelling agent; and (d2) forming drops (12) of fatty phase (14) in the aqueous phase (16a) or in the aqueous phase (16b); (e2) flowing in a circulation conduit (38), drops (12) in the aqueous phase (16a) or in the aqueous phase (16b); and (f2) recovering a composition according to the invention in a container (33); the method comprises at least one step (g2) consisting of injecting the other aqueous phase from among the aqueous phase (16a) or the aqueous phase (16b) into the circulation conduit (38) or at the outlet of the circulation conduit (38), upstream of the container (33), it being understood that the aqueous phase of the composition comprises at least one salt and at least two hydrophilic gelling agents capable of gelling in the presence of the salt(s). Against all expectations,the properties of the aqueous phase (16a) or (16b) injected in step (g2) allow steps (d2) and (e2) to be carried out at room temperature, which is advantageous from an economic and ecological point of view, and even more so when reasoning on an industrial scale. When the aqueous phase (16a) or (16b) injected in step (g2) comprises at least one salt, said aqueous phase can then be described as an additional solution (62) as described previously. According to a variant of the manufacturing method according to this second embodiment, the aqueous phase (16a) or (16b) of step (d2) comprises only a portion of the salt(s) and the other aqueous phase among the aqueous phase (16a) or (16b) injected in step (g2) comprises the other portion of the salt(s). According to this variant,the salt(s) present in the aqueous phase (16a) and in the aqueous phase (16b) may be identical or different. Such a variant is particularly advantageous in that it can further improve the stability and robustness of the manufacturing process, and in particular improve the good formation of the drops. When the salts are different, such a variant is further advantageous in that it allows the use of two hydrophilic gelling agents capable of gelling respectively in the presence of different salts, which thus offers more flexibility as to the choice of these hydrophilic gelling agents capable of gelling in the presence of salt(s). According to this second embodiment, the two hydrophilic gelling agents capable of gelling in the presence of the salt(s) are advantageously chosen from iota-carrageenan and alginate. According to a preferred variant of this second embodiment,the aqueous phase (16a) or (16b) of step (d2) comprises at least one first hydrophilic gelling agent capable of gelling in the presence of at least one salt, preferably iota-carrageenan, and at least one salt, and the other aqueous phase among the aqueous phase (16a) or (16b) of step (g2) comprises at least one second hydrophilic gelling agent capable of gelling in the presence of at least one salt, preferably alginate. The preparation of the aqueous phases (16a) and (16b), when the latter comprise at least one hydrophilic gelling agent capable of gelling in the presence of at least one salt and at least one salt,may comprise at least the following steps: (a2.1) providing an aqueous phase comprising at least one hydrophilic gelling agent capable of gelling in the presence of the salt(s); (a2.2) adding the salt(s) to the aqueous phase of step (a2.1); (a2.3) ensuring a return to room temperature of the mixture obtained in step (a2.2) simultaneously and / or consecutively to step (a2.2); and (a2.4) optionally, shearing the mixture obtained in step (a2.3), simultaneously and / or consecutively to step (a2.3), whereby an aqueous phase (16a) or (16b) is obtained which, at room temperature, is microscopically in the form of gel microfragments and macroscopically in liquid form. Preferably, step (a2.1), or even step (a2.2), is / are carried out at a temperature above room temperature, in particular at a temperature between 40°C and 100°C, or even between 50°C and 90°C,and particularly between 60°C and 80°C. This increase in temperature makes it possible to improve the incorporation of the two hydrophilic gelling agents capable of gelling in the presence of the salt(s), or even the salt(s), in the aqueous phase. According to an alternative embodiment of the manufacturing method according to the second embodiment described above, the aqueous phase (16b) comprises at least two raw materials chosen from: - at least one first hydrophilic gelling agent capable of gelling in the presence of at least one salt; - at least one second hydrophilic gelling agent capable of gelling in the presence of at least one salt; and - at least one salt, at least one of the two raw materials being the third raw material not present in the aqueous phase (16a). According to a preferred alternative embodiment of this second embodiment,the method for manufacturing a composition according to the invention may comprise at least the steps consisting of: (a3) ​​having an aqueous phase (16a) in a liquid form comprising at least water and: - at least one first hydrophilic gelling agent capable of gelling in the presence of at least one second salt; and - at least one first salt capable of reacting with a second hydrophilic gelling agent capable of gelling in the presence of the first salt; (b3) having an aqueous phase (16b) in a liquid form comprising at least water and: - at least one second hydrophilic gelling agent capable of gelling in the presence of the first salt; and - at least one second salt capable of reacting with the first hydrophilic gelling agent capable of gelling in the presence of the second salt; (c3) having a fatty phase (14) in a liquid form,substantially immiscible with the aqueous phase (16a) and the aqueous phase (16b) and comprising at least one oil and optionally at least one lipophilic gelling agent; and (d3) forming drops (12) of fatty phase (14) in the aqueous phase (16a); (e3) flowing into a circulation conduit (38), drops (12) in the aqueous phase (16a); and (f3) recovering a composition according to the invention, in a container (33); the method comprises at least one step (g3) consisting of injecting the aqueous phase (16b) into the circulation conduit (38) or at the outlet of the circulation conduit (38), upstream of the container (33), in which: - the first and second hydrophilic gelling agents are different; - the first and second salts are different; and - optionally,the first hydrophilic gelling agent is not capable of gelling with the first salt and / or the second hydrophilic gelling agent is not capable of gelling with the second salt. For the various embodiments described above, the method for manufacturing a composition in the form of a dispersion may therefore be based on an aqueous phase which, in step (c1), (d2) or (d3) and at room temperature, is microscopically in the form of a dispersion of gel microfragments, optionally obtained after shearing, and macroscopically in liquid form. This liquid form may result from the composition of the aqueous phase, in particular when the content of ion-sensitive hydrophilic gelling agent(s) and / or salt(s) is low, or be the result of a shearing step when the aqueous phase is in the form of a solid gel in the absence of such shearing. The person skilled in the art will know how to adjust the manufacturing process to have, in step (c1), (d2) or (d3),of a liquid aqueous phase at room temperature, and therefore to decide whether or not to subject this aqueous phase, prior to step (c1), (d2) or (d3) to a shearing step, failing which the aqueous phase may be in the form of a solid and brittle gel incompatible with a microfluidic process according to the invention. Against all expectations, the inventors have observed that, in the presence of an aqueous phase, even when provided with high contents of ion-sensitive hydrophilic gelling agents, the shearing described in step (a1.4) or (a2.4) above leads to the formation of an aqueous phase which is microscopically in the form of gel microfragments and macroscopically in fluid form, this structure remaining unexpectedly compatible with a microfluidic process according to the invention at room temperature. Adjusting the shear rate of the aqueous phase falls within the general skills of a person skilled in the art,which can be carried out by any technique known to those skilled in the art, in particular via a stirring blade or a mixer. Advantageously, this shearing step corresponds to strong stirring, which makes it possible to facilitate the formation of gel microfragments of optimized size, or even monodisperse, and thus prevent any blockage of the microfluidic process and / or improve the performance of the gelled aqueous phase (22) in terms of visual, sensoriality and / or, when the composition is in the form of a dispersion, suspensivity with respect to the drops of dispersed fatty phase. The liquid nature of the fatty phase (14) required in step (b1), (c2) or (c3) according to the manufacturing methods described above can be obtained by means of sufficient shearing and / or an increase in temperature, in particular when the fatty phase (14) comprises at least one lipophilic gelling agent. In particular, this step (b1),(c2) or (c3) is carried out at a temperature greater than or equal to the highest melting point of the lipophilic gelling agent(s), and preferably at a temperature between 70°C and 120°C, and in particular between 80°C and 100°C. The microfluidic steps of the manufacturing method according to the invention may be as described in WO2012 / 120043, WO2015 / 055748 or WO2019145424. A method for manufacturing a composition according to the invention in dispersion form is advantageously implemented using the apparatus (30) illustrated in FIG. 1, which comprises a nozzle (32) for forming the drops (12), a receptacle (33) for receiving the drops (12) formed, and optionally a stage (31) for injecting the additional solution (62). In the case of a simple dispersion, the forming nozzle (32) comprises at least one internal conduit (34) for supplying an internal fluid (36) comprising a first phase (14), and an external circulation conduit (38),arranged around the internal conduit (34) to supply and circulate an external fluid (40) forming at least part of the second phase (16). In view of the above, the first phase (14) corresponds to the dispersed fatty phase and the second phase (16), depending on the embodiment considered, to the gelled aqueous phase (22) or to the aqueous phase (16a) or the aqueous phase (16b). The apparatus (30) further comprises means (46) for supplying internal fluid (36) into the internal conduit (34), and means (48) for supplying external fluid (40) into the annular space delimited between the internal conduit (34) and the external conduit (38). In the example shown in Figure 1,the maximum diameter of the conduits (34) and (38) is less than 3 mm to preserve the microfluidic nature of the process. The internal conduit (34) is advantageously arranged coaxially in the external conduit (38). It is connected upstream to the supply means (46). It opens downstream through a downstream opening (54) arranged in the external conduit (38). The external conduit (38) delimits with the internal conduit (34) an annular space connected upstream to the supply means (48). The external conduit (38) has a downstream opening (55) which is located above and away from the container (33). The embodiment described in figure 1 comprises the implementation of an additional solution (62). In fact, the downstream opening (55) opens into the solution injection stage (62). The supply means (46) and (48) each comprise, for example, a syringe pump, a peristaltic pump or another pressure generating system controlling the flow rate,such as for example a pressure pot coupled with a flow meter and a flow control system. Each of the supply means (46) and (48) is capable of conveying a respective fluid (36) and (40) at a controlled and adjustable flow rate. In the case of multiple dispersion, the forming nozzle (32) (not shown) comprises at least one internal conduit (34) for supplying an intermediate fluid (39) intended to form a third phase (19), and an intermediate conduit (37) for supplying the internal fluid (36) comprising the first phase (14), arranged around the internal conduit (34). Such a forming nozzle (32) is notably described in figures 4 and 5 of the patent application filed under No. FR2112591. The forming nozzle (32) further comprises an external circulation conduit (38),arranged around the internal conduit (34) and / or the intermediate conduit (37) to supply and circulate an external fluid (40). The apparatus (30) further comprises means (46) for supplying intermediate fluid (39) into the internal conduit (34), means (47) for supplying internal fluid (36) into the intermediate conduit (37), and means (48) for supplying external fluid (40) into the annular space delimited between the internal conduit (34) and the external conduit (38). The internal conduit (34) is advantageously arranged coaxially in the external conduit (38). It is connected upstream to the supply means (46). It opens downstream through a downstream opening (52) arranged in the external conduit (38), set back from the downstream opening (54) defined by the intermediate conduit (37),above this opening (54). The intermediate conduit (37) extends around the internal conduit (34). It delimits with the internal conduit (34) an annular space connected upstream to the supply means (47). The intermediate conduit (37) opens through the downstream opening (54). The external conduit (38) delimits with the intermediate conduit (37) and / or the internal conduit (34) an annular space connected upstream to the supply means (48). The external conduit (38) has a downstream opening (55) which is located above and away from the container (33). Depending on the embodiment of the manufacturing method considered, the downstream opening (55) can open into the injection stage of the phase (16b) which can comprise an additional solution (62). The supply means (46), (47) and (48) each comprise, for example, a syringe pump, a peristaltic pump or another pressure generating system controlling the flow rate,such as for example a pressure pot coupled with a flow meter and a flow control system. Each of the supply means (46), (47) and (48) is capable of conveying a respective fluid (39), (36), (40) at a controlled and adjustable flow rate. According to the invention, the stage (31) comprises at least one conduit (60) for injecting a solution (62), and means (64) for supplying the solution (62) into the conduit (60). The supply means (64) comprise a reservoir (68) containing the solution (62), and a conveying unit (not shown). The conveying unit comprises for example a syringe pump, a peristaltic pump or another pressure generating system controlling the flow rate, such as for example a pressure pot coupled with a flow meter and a flow control system. For the manufacturing method according to the first embodiment described above,the container (33) is arranged below the dispensing opening (55) (not shown). For the manufacturing method according to the second embodiment described above, the container (33) is arranged below the dispensing opening (66). Alternatively, the container (33) contains a volume (70) of liquid intended to form a part of the continuous aqueous phase. In the example shown in Figure 1, the device (30) has been illustrated with a single nozzle (32), associated with a single stage (31). In an advantageous variant, illustrated in Figure 8 of the patent application filed under No. FR2112591, the system (30) comprises a plurality of nozzles (32), all connected downstream to a common stage (31),the nozzles (32) being arranged in parallel above a container (33). The nozzles (32) are offset laterally relative to the stage (31). A collection circuit makes it possible to collect the drops (12) in the liquid (40) at the outlet of each nozzle (32) to gather them and introduce them into the stage (31). Uses Preferably, a composition according to the invention can be used directly, at the end of the aforementioned preparation process, as a composition, in particular a cosmetic composition. The invention also relates to the use of a composition according to the invention for the preparation of a composition, in particular a cosmetic, pharmaceutical, nutritional or agri-food composition, preferably a cosmetic composition and in particular a composition for the care and / or makeup of a keratin material, in particular of human beings, in particular of the skin. A composition according to the invention is intended for oral or topical application,preferably topical. The present invention thus also relates to a composition, in particular cosmetic, in particular for the care and / or makeup of a keratin material, in particular of the skin and / or hair, and more particularly of the skin, comprising at least one composition according to the invention, optionally in association with at least one physiologically acceptable medium. The compositions according to the invention can therefore in particular be used in the cosmetic field. They can comprise, in addition to the aforementioned ingredients or compounds, at least one physiologically acceptable medium. The physiologically acceptable medium is generally adapted to the nature of the support on which the composition is to be applied, as well as to the appearance in which the composition is to be packaged. According to one embodiment,the physiologically acceptable medium is represented directly by the aqueous continuous phase as described above. In the context of the invention, and unless otherwise stated, the term "physiologically acceptable medium" means a medium suitable for cosmetic applications, and suitable in particular for the application of a composition of the invention to a keratin material, in particular the skin and / or the hair, and more particularly the skin. A cosmetic composition of the invention may be, for example, a cream, a lotion, a serum and a gel for the skin (hands, face, feet, etc.), a foundation (liquid, paste), a preparation for baths and showers (salts, mousses, oils, gels, etc.), a hair care product (hair dyes and bleaches), a cleaning product (lotions, powders, shampoos), a hair care product (lotions, creams, oils), a styling product (lotions, lacquers, brilliantines), a shaving product (soaps,mousses, lotions, etc.), a product intended to be applied to the lips, a sun product, a sunless tanning product, a skin whitening product, an anti-wrinkle product. In particular, a cosmetic composition of the invention may be an anti-aging serum, a youth serum, a moisturizing serum or a scented water. According to one embodiment, a composition of the invention may be in the form of a foundation, a makeup remover, a facial and / or body and / or hair care product, an anti-aging treatment, a sunscreen, an oily skin care product, a whitening treatment, a moisturizing treatment, a BB cream, tinted cream or foundation, a facial and / or body cleanser, a shower gel or a shampoo. The present invention also relates to a non-therapeutic method for the cosmetic treatment of a keratin material, in particular the skin and / or hair,comprising a step of applying to the keratin material at least one aforementioned cosmetic composition. The present invention finally relates to the use of a composition according to the invention, for improving the surface appearance of the skin, in particular for moisturizing, protecting, treating the skin and / or reducing the signs of skin aging, in particular and / or reducing wrinkles and fine lines. Throughout the description, the expression "comprising a" must be understood as being synonymous with "comprising at least one", unless otherwise specified. The expressions "between ... and ...", "from ... to ..." and "ranging from ... to ..." must be understood inclusively, unless otherwise specified. Particular examples of implementing the process according to the invention for obtaining compositions in the form of dispersions will now be described. EXAMPLES Unless otherwise indicated,in the following examples: - the manufacture of the dispersions is carried out using a microfluidic device as described in WO2012120043. If necessary, the device is adapted to allow the injection of an additional solution (BF) after formation of the drops, as described in WO2015055748, and / or to heat the fatty phase to 80°C. - The viscosity is measured at room temperature and at ambient pressure by the following method: - A Brookfield type viscometer is used, typically a Brookfield RVDV-E digital viscometer (spring torque of 7187.0 dyne-cm),which is a rotational viscometer with imposed speed equipped with a spindle. A speed is imposed on the rotating spindle and the measurement of the torque exerted on the spindle makes it possible to determine the viscosity by knowing the geometry / shape parameters of the spindle used. - For example, a spindle of size No.04 (Brookfield reference: RV4) is used. The shear rate corresponding to the viscosity measurement is defined by the spindle used and its rotation speed. - The viscosity measurement is carried out over 1 minute at room temperature (T=25°C ± 2°C). Approximately 150 g of solution is placed in a 250 ml beaker with a diameter of approximately 7 cm so that the height of the volume occupied by the 150 g of solution is sufficient to reach the gauge marked on the spindle. Then,the viscometer is started at a speed of 10 rpm and the value displayed on the screen is waited for to be stable. This measurement gives the viscosity of the tested fluid, as mentioned in the context of the present invention. - The suspensivity is evaluated after placing 30 ml polypropylene (PP) receptacles half-filled with the different tests to be tested for 1 month at 50°C. - The transparency of the continuous aqueous phase is determined as follows: the composition to be tested is poured into a 30 ml Volga pot, the composition is left for 24 hours at room temperature and a white sheet is placed underneath on which a cross about 2 mm thick is drawn with a black felt-tip pen. If the cross is visible to the naked eye in daylight at an observation distance of 40 cm,the composition is transparent. - Scoring criteria: the tests of the examples below are evaluated in terms of compatibility with the microfluidic manufacturing process, viscosity, suspensivity and transparency, as described in Tables 1 and 2 below. Table 1: [Table 1] Table 2: [Table 2],

[0002] For each test, a score of 3 on at least one of the parameters evaluated above is considered eliminatory. Example 1: Comparative study 10 dispersions are prepared using the microfluidic device described above. Tests 1 to 5 are outside the invention and tests 6 to 10 are according to the invention. The composition of the starting phases are described in Tables 3 and 4 below. Table 3: [Table 3]

[0003] ij7 Table 4: [Table 4]

[0004] Preparation protocol for tests 1 to 5: The preparation of the PG and PA phases of tests 1 to 5 falls within the general knowledge of a person skilled in the art. The preparation of the PA and PG phases is carried out at 80°C to allow the solubilization of all the materials. Tests 1 and 3 to 5 are also based on the use of a BF which includes NaOH (test 1) or salt (tests 3 to 5). This BF is injected after the formation of the drops in the PA phase. Test 2 does not include BF. Preparation protocol for tests 6 and 7: The PA phase includes Alginate or Sclerothix, combined with Satiagel VPC 508 P. For both tests, the two respective gelling agents are added simultaneously to the PA phase at 80°C with stirring. Tests 6 and 7 are also based on the implementation of a BF which is injected after formation of the drops in the PA phase.Preparation protocol for tests 8 to 10: The PA phase initially includes the two ion-sensitive hydrophilic gelling agents and the salt. For all 3 tests, the two respective gelling agents are added simultaneously to the PA phase at 80°C with stirring, then the salt is added, still at 80°C and with stirring. The mixture is then allowed to cool to room temperature without stirring, whereby a gel is formed, which is then sheared, whereby a fluid gel is obtained in the form of a dispersion of gel microfragments. The preparation protocol for tests 8 to 10 therefore does not include BF. In these tests, the following flow rates (in mL / hr per nozzle) were used.Table 5: [Table 5] In relation to the different manufacturing process embodiments described above, the aqueous phase injected into the microfluidic device: - for tests 1 and 3 to 7, corresponds to an aqueous phase (16a) or (16b); and - for tests 2 and 8 to 10, corresponds to the gelled aqueous phase (22). The dispersions obtained comprise drops having an average diameter of 800 μm. Results: Table 6: [Table 6] Test 2 is in the form of a firm and brittle gel. Tests 3 to 5, in terms of suspensivity, although satisfactory at room temperature, have insufficient performance at 50°C. In view of the above, the implementation of a gelling system with at least two ion-sensitive hydrophilic gelling agents in an aqueous phase (i.e. tests 6 to 10) shows a synergy at the level of suspensivity.This observation is all the more unexpected since such an aqueous phase remains: - compatible with the constraints inherent in a microfluidic process, particularly in terms of viscosity limit, - compatible with injection into the microfluidic device at room temperature, which is particularly advantageous from the point of view of safety, simplicity and energy saving, and - satisfactory in terms of viscosity, fluidity and transparency. Tests 6 to 10 are also stable and have satisfactory performances and at least similar to those of test 1 in terms of non-stickiness and play-time, which again is unexpected. This example 1 shows that it is therefore possible to manufacture a gelled aqueous phase with a modulable viscosity, free of carbomer, and which after activation remains flexible, fluid and slightly cohesive, even at high viscosity.This example 1 shows that it is also possible to manufacture dispersions by means of a microfluidic process at room temperature using such an aqueous phase. The best results in terms of stability are obtained with tests 7 to 9. Example 2: Influence of the percentage of Satiagel VPC 508 PA From test 7 of example 1, 4 dispersions 11 to 14 are prepared which differ only in the content of Satiagel VPC 508 P, as described in table 7 below. Table 7: [Table 7] Results: Table 8: [Table 8] These results show that an increase in the content of Satiagel VPC 508 P allows for a further improvement in the suspensivity, which reflects a further improved resistance of the continuous aqueous phase to temperature.This observation is all the more unexpected since the increase in viscosity resulting from an increase in the Satiagel VPC 508 P content nevertheless remains compatible with the constraints inherent in a microfluidic process, particularly in terms of viscosity limit, and retains satisfactory properties in terms of transparency. The tests of Example 2 are also stable and have satisfactory performances and at least similar to those of Test 1 in terms of non-stickiness and play-time, which again is unexpected. Similar results were obtained from Test 9 of Example 1. Example 3: Influence of the percentage of Sclerothix From Test 7 of Example 1, 3 dispersions 15 to 17 are prepared which differ only in the Sclerothix content, as described in Table 9 below.Table 9: [Table 9] Results: Table 10: [Table 10] These results show that an increase in Sclerothix has little impact on the properties of a composition according to the invention in terms of viscosity and suspensivity. This observation is all the more unexpected since the increase in viscosity resulting from an increase in the Sclerothix content nevertheless remains compatible with the constraints inherent in a microfluidic process, particularly in terms of viscosity limit, and retains satisfactory properties in terms of viscosity and transparency. The tests of Example 3 are also stable and have satisfactory performances and at least similar to those of Test 1 in terms of non-stickiness and playtime, which again is unexpected.

Claims

CLAIMS 1. Composition, in particular cosmetic, comprising at least one fluid gelled aqueous phase comprising at least one salt and at least two hydrophilic gelling agents capable of gelling in the presence of the salt(s), the composition being carbomer-free and further comprising a fatty phase in the form of drops dispersed in the continuous aqueous phase, the fatty phase and the aqueous phase being immiscible, the drops having a diameter greater than or equal to 100 μm represent a volume greater than or equal to 60%, or even greater than or equal to 70%, preferably greater than or equal to 80%, and better still greater than or equal to 90% of the total volume of the dispersed fatty phase and / or at least 60%, or even at least 70%, preferably at least 80%, and better still at least 90%, of the drops have an average diameter greater than or equal to 100 μm. 2.Composition according to the preceding claim, in which the aqueous phase has a viscosity, as measured at 25°C and under a shear stress of 2 s. -1, comprised from 500 mPa.s to 50000 mPa.s, preferably from 1000 mPa.s to 25000 mPa.s, in particular from 2000 mPa.s to 15000 mPa.s, and in particular from 5000 mPa.s to 10000 mPa.s.

3. Composition according to claim 1 or 2, in which the hydrophilic gelling agents capable of gelling in the presence of the salt(s) are chosen from natural polymers; biosynthetic polymers; modified polymers; and mixtures thereof, preferably from carrageenan, in particular kappa and iota-carrageenan; gellan gum; alginate; pectin; diutan gum; furcellaran; or one of their derivatives; and mixtures thereof. 4.Composition according to any one of the preceding claims, in which the aqueous phase comprises between 0.05% and 5%, preferably between 0.1% and 2.5%, better still between 0.25% and 1.5%, and most particularly between 0.4% and 1%, by weight of hydrophilic gelling agents capable of gelling in the presence of at least one salt relative to the total weight of the aqueous phase.

5. Composition according to any one of the preceding claims, in which the composition comprises at least one first hydrophilic gelling agent capable of gelling in the presence of at least one salt chosen from carrageenan, and most particularly iota-carrageenan, and at least one second hydrophilic gelling agent capable of gelling in the presence of the salt(s) chosen from gellan gum and / or alginate, and preferably gellan gum. 6.Composition according to the preceding claim, in which the aqueous phase comprises a “first hydrophilic gelling agent / second hydrophilic gelling agent” weight ratio of between 0.5 and 6, preferably between 0.75 and 4, and better still between 1 and 3.

7. Composition according to any one of the preceding claims, in which the salt is a monovalent salt, preferably chosen from sodium salts such as sodium chloride, potassium salts such as potassium chloride; and / or is a multivalent salt, in particular divalent, preferably the salt is chosen from calcium salts such as calcium chloride, calcium gluconate, calcium citrate, calcium carbonate, magnesium salts such as magnesium sulfate, and mixtures thereof.

8. Composition according to any one of the preceding claims, in which the aqueous phase comprises between 0.1% and 20%, preferably between 0.4% and 15%, better still between 0.8% and 10%, and most particularly between 1% and 5%, by weight of salt(s) relative to the total weight of the aqueous phase. 9.Composition according to any one of the preceding claims, in which the aqueous phase is microscopically in the form of gel microfragments and macroscopically in fluid form.

10. Composition according to any one of the preceding claims, in which the aqueous phase further comprises at least one non-ionosensitive and non-thermosensitive hydrophilic gelling agent, in particular chosen from a vegetable gum, and preferably chosen from xanthan gum, sclerotium gum, cellulose or one of its derivatives, starch or one of its derivatives, locust bean gum, acacia gum, Alcasealane, lambda carrageenan, glucomannan, tamarind gum, konjac gum and mixtures thereof. 11.Composition according to any one of the preceding claims, in which the aqueous phase has a flow threshold greater than or equal to 0.1 Pa, in particular greater than or equal to 1 Pa, and preferably between 0.25 Pa and 100 Pa, in particular between 1 Pa and 75 Pa, very particularly between 2 Pa and 50 Pa, or even between 5 Pa and 25 Pa, and better still between 10 Pa and 20 Pa.

12. Composition according to any one of the preceding claims, in which the fatty phase comprises at least one oil and optionally at least one lipophilic gelling agent, preferably heat-sensitive, and in particular chosen from lipophilic, organic or mineral, polymeric or molecular gelling agents; fatty substances which are solid at ambient temperature and pressure; and mixtures thereof. 13.Composition according to any one of the preceding claims, in which the composition comprises from 1% to 60%, in particular from 5% to 50%, preferably from 10% to 40%, and better still from 15% to 30%, by weight of fatty phase relative to the total weight of the composition.

14. A method of manufacturing a composition according to any one of claims 1 to 13, the method comprising at least the steps of: (a1) providing a gelled aqueous phase (22) in a fluid form comprising at least one salt and at least two hydrophilic gelling agents capable of gelling in the presence of the salt(s); (b1) providing a fatty phase (14) in a liquid form, substantially immiscible with the gelled aqueous phase (22), and comprising at least one oil and optionally at least one lipophilic gelling agent; (c1) forming drops (22) of fatty phase (14) in the gelled aqueous phase (22); (d1) flowing drops (12) into the gelled aqueous phase (22) in a circulation conduit (38);and (e1) recovering a composition according to any one of claims 1 to 13, in a container (33).

15. A method of manufacturing a composition according to any one of claims 1 to 13, the method comprising at least the steps of: (a2) providing an aqueous phase (16a) in a liquid form comprising at least water and at least two raw materials chosen from: - at least one first hydrophilic gelling agent capable of gelling in the presence of at least one salt; - at least one second hydrophilic gelling agent capable of gelling in the presence of at least one salt; and - at least one salt; (b2) providing an aqueous phase (16b) in a liquid form comprising at least water and at least the third raw material from: - at least one first hydrophilic gelling agent capable of gelling in the presence of at least one salt; - at least one second hydrophilic gelling agent capable of gelling in the presence of at least one salt; and - at least one salt;(c2) providing a fatty phase (14) in a liquid form, substantially immiscible with the aqueous phase (16a) and the aqueous phase (16b) and comprising at least one oil and optionally at least one lipophilic gelling agent; (d2) forming drops (12) of fatty phase (14) in the aqueous phase (16a) or in the aqueous phase (16b); (e2) flowing in a circulation conduit (38), drops (12) in the aqueous phase (16a) or in the aqueous phase (16b); (f2) recovery of a composition according to any one of claims 1 to 13, in a container (33); the method comprises at least one step (g2) consisting of injecting the other aqueous phase among the aqueous phase (16a) or the aqueous phase (16b) into the circulation conduit (38) or at the outlet of the circulation conduit (38), upstream of the container (33), it being understood that the aqueous phase of the composition comprises at least one salt and at least two hydrophilic gelling agents capable of gelling in the presence of the salt(s).

16. Method according to claim 14 or 15, characterized in that the aqueous phase, in step (c1) or (d2) and at room temperature, is microscopically in the form of a dispersion of gel microfragments, optionally obtained after shearing, and macroscopically in liquid form. 17.Non-therapeutic process for the cosmetic treatment of a keratin material, in particular the skin and / or the hair, comprising a step of applying to the keratin material at least one composition according to any one of claims 1 to 13.

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