FR3015294A1 - PROCESS FOR DECONTAMINATING AND CONDITTING A COSMETIC PRODUCT, NECESSARY AND PACKAGING THEREFOR - Google Patents

Abstract

This method of decontaminating cosmetic products, in particular pasteurization or sterilization, comprises providing (40) the cosmetic product in a package, placing (42) the package containing the cosmetic product in a microwave cavity, the temperature rise (44) of the cosmetic product contained in the packaging by microwave heating to a decontamination temperature, and the maintenance (46) of the cosmetic product contained in the packaging at the decontamination temperature during a decontamination period adapted to reduce the number of bacteria present in the cosmetic product below a threshold of decontamination, in particular pasteurization or sterilization.

Description

The present invention relates to a process for decontaminating and conditioning a cosmetic product.

"Decontamination" advantageously means pasteurization, or sterilization of the cosmetic product. For the purposes of the present invention, the term "cosmetic product" is understood to mean a product as defined in Regulation (EC) No. 1223/2009 of the European Parliament and of the Council of November 30, 2009 relating to cosmetic products.

The product may be in any of the possible forms, in particular solution, gel, emulsion and may contain fillers, pigments, different levels of oils, etc. The cosmetic product is advantageously a composition intended to be applied on the surface. skin, for example a skin care composition or a skin cleansing composition. The most common technique for decontaminating a cosmetic product composition consists in adding to the composition one or more chemical preservatives, such as, for example, parabens. This prevents microbial growth, both during the production phase of the product and throughout the use of this product and guarantees quality for the consumer. However, some of these chemical preservatives have disadvantages because of their high penetration power, their persistence or because they can cause allergic reactions. There is therefore a need for cosmetic protection solutions that do not involve the presence of chemical preservatives in the composition. To meet this need, it is known from the state of the art a method of decontaminating a cosmetic product consisting in adding in the composition of the product ingredients having antimicrobial activity, but not listed as "preservatives" by the appendix. Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products. However, such substitute ingredients have lower antimicrobial activity than chemical preservatives, including parabens. Other methods of decontaminating cosmetic products are known.

Some of these processes consist in manufacturing the products under pharmaceutical manufacturing conditions, namely firstly heat-treating the products in bulk form, then separately treating the packaging articles of these products, and then packaging the products in the room. white and controlled atmosphere. However, such methods involve high costs and manufacturing constraints.

Thus, a real industrial problem is created today around a possibility of better protection of cosmetic products, without inconvenience for the body of consumers and can easily be industrialized. An object of the invention is to provide a method of decontaminating a cosmetic product to obtain effective decontamination, without inconvenience to the body of consumers, while being easily industrializable. For this purpose, according to a first aspect of the invention, the subject of the invention is a decontamination process of the aforementioned type, comprising the following steps: - supply of the cosmetic product in a package, - introduction of the packaging containing the cosmetic product in a microwave cavity, - raising the temperature of the cosmetic product contained in the packaging by microwave heating to a decontamination temperature, and - maintaining the cosmetic product contained in the packaging at the decontamination temperature during a decontamination period adapted to reduce the number of bacteria present in the cosmetic product below a threshold of decontamination, in particular pasteurization or sterilization. According to other advantageous aspects of the invention, the method comprises one or more of the following characteristics, taken alone or in any technically possible combination: during the step of maintaining the cosmetic product contained in the packaging at the decontamination temperature, a fluid is circulated inside the microwave cavity, the fluid being maintained at the decontamination temperature by heating means arranged within the microwave cavity; the step of maintaining the cosmetic product contained in the packaging at the decontamination temperature comprises, simultaneously with the circulation of the fluid inside the microwave cavity, the application of a heating by a micro route -wave ; it furthermore comprises a step of forced cooling of the cosmetic product, by introducing the package containing the cosmetic product into a cooling cell; the decontamination temperature is greater than or equal to 85 ° C., preferably between 85 ° C. and 150 ° C .; the cosmetic product is devoid of preservative; - The package is closed before the implementation step in the microwave cavity.

The invention also relates to a decontamination kit, in particular pasteurization or sterilization, and packaging a cosmetic product comprising: - a plurality of packages filled with cosmetic product; - A decontamination device, including pasteurization or sterilization comprising a microwave cavity adapted to receive successively each package or simultaneously several packages; a control assembly of the microwave cavity adapted to control the microwave cavity for effecting a temperature rise of the cosmetic product contained in each package by microwave heating to a decontamination temperature, and then a maintenance the cosmetic product contained in each package at the decontamination temperature for a period of decontamination adapted to reduce the number of bacteria present in the cosmetic product below a threshold of decontamination, in particular pasteurization or sterilization. Another object of the invention is to obtain a package containing a cosmetic product, which allows effective decontamination of the product, while having an improved resistance to temperatures, microwaves and internal pressures generated by heating the product. cosmetic it contains. For this purpose, according to a second aspect of the invention, independent and complementary to the first aspect, the invention relates to a package containing a cosmetic product. According to an advantageous aspect of the invention, the cosmetic product contained in the packaging is decontaminated, in particular pasteurized or sterilized, the decontaminated cosmetic product being preferably capable of being obtained by the implementation of the method as described above. According to other advantageous aspects of the invention, the packaging comprises one or more of the following characteristics, taken in isolation or in any technically possible combination: it comprises a base body having a dielectric constant of less than 4, preferably between 2.0 and 2.6; - It comprises a base body having a dielectric loss factor of less than 10-2, preferably between 10-4 and 10-3 - the cosmetic product is devoid of preservative.

The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings, in which: FIG. 1 is a side view of a package according to FIG. invention; FIG. 2 is a flow chart showing the process of pasteurization or sterilization and conditioning according to the invention; and FIG. 3 illustrates the power emitted, the set temperature and the temperature reached during the process of FIG. 2; -. FIG. 4 illustrates a sectional view along a median axial plane of another package according to the invention; - Figure 5 illustrates a cross section of the package of Figure 4; - Figure 6 illustrates yet another package according to the invention. An example of packaging 10 according to the invention containing a cosmetic product 12 is illustrated in side view in FIG.

Such a cosmetic product 12 is, for example, a cleaning composition for the skin, in particular a cleansing lotion. Advantageously, the cosmetic product 12 is a decontaminated cosmetic product, in particular pasteurized or sterilized, obtained by the implementation of a method of decontamination, in particular pasteurization or sterilization and packaging according to the invention, as detailed later . The cosmetic product 12 is advantageously completely devoid of preservatives. For this purpose, it does not include agents defined in Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products.

Alternatively or additionally, the product 12 comprises less than 10% by weight of antimicrobial agents such as ethanol, or even less than 5% by weight of antimicrobial agents, or even it does not contain antimicrobial agents at all. The term "decontaminated" in particular means that the bacterial content is less than 1000 CFU / g, this threshold being an example of a decontamination threshold.

By "pasteurized", it is meant that the mesophilic and yeasts and mold-type aerobic microorganisms content is each less than 1000 CFU / g for the cosmetics excluding eyes and each lower than 100 CFU / g for the sensitive products. intended for the contours of eyes and babies. These thresholds are for example determined by the standards IS021149 and IS016212.

In addition, no pathogenic germ such as Candida albicans, Escherichia coli, Pseudimona aeruginosa, Staphyloccocus aureus is present in at least one gram of product. Advantageously, this absence is measured respectively by the standards IS018416, IS018415, IS022717, IS022718. These conditions define a pasteurization threshold. By "sterilized" is meant that the bacterial content is less than 1 CFU / g. These conditions define a sterilization threshold. The package 10 comprises a base body 14 delimiting an internal volume 16, a neck 18, and a shoulder 19 joining the base body 14 to the neck 18. The cosmetic product 12 is contained within the base body 14 within the interior volume 16. The package 10 further comprises a product dispensing member 20 mounted on the neck 18. In the advantageous embodiment of FIG. 1, the package 10 is a rigid package of which the base body 14 is in particular glass, able to allow the distribution of several doses of cosmetic product 12 to at least one user. "Rigid packaging" means any package advantageously not deformable to the touch. In a variant not shown, the base body 14 is formed of a thermoplastic resin, the thermoplastic resin being a polyolefin thermoplastic such as, for example, polypropylene or high density polyethylene. Alternatively, the thermoplastic resin is a copolymer cycloolefin. In this embodiment, the cosmetic product 12 occupies, within the base body 14, a volume advantageously greater than 50% of the internal volume 16, preferably substantially between 70% and 95% of the internal volume 16.

The base body 14 advantageously has a dielectric constant of less than 4, preferably less than 2.6. The base body 14 advantageously has a dielectric loss factor of less than 10 -2. The base body 14 is advantageously provided with a bottom 22 having a substantially concave shape. The concave shape of the bottom 22 makes it possible to reinforce the base body 14 locally and thus to improve the resistance to the pressure of the base body 14. In a variant, the shape of the bottom is convex. The concave bottom 22 advantageously has a thickness of material reinforced with respect to the thickness or the quantity of material of the rest of the base body 14. The thickness of the bottom is for example greater than 0.5 mm, in particular greater than 0 , 8 mm.

Preferably, the inner volume 16 is between 10 ml and 250 ml. In the embodiment of Figure 1, the internal volume 16 is substantially equal to 177 ml. The shoulder 19 forms a junction between the base body 14 and the neck 18.

In other words, the base body 14, the shoulder 19 and the neck 18 are made of material. In the advantageous embodiment of Figure 1, the shoulder 19 has a substantially rounded shape. In variant not shown, the shoulder 19 has a substantially frustoconical shape. The substantially rounded or frustoconical shape of the shoulder 19 reinforces the base body 14 and thus improves the pressure resistance of the base body 14. In the embodiment of FIG. 1, the dispensing member 20 advantageously comprises a sealed pump 26, intended to allow the sampling and dispensing by a user of a dose of the cosmetic product 12 while retaining the imperviousness to retro-contamination inside the interior volume 16.

The sealed pump 26 is for example of the "APF +" type, marketed by the company APTAR. Alternatively, the base body may be closed by any sealing member such as a plug for example screwed or snapped onto the base body. Thanks to the aforementioned characteristics, the packaging 10 according to the invention is advantageously able to withstand a pressure increase of at least 0.245 bar within the interior volume 16, for example the package undergoes no deformation or irreversible alteration following this increase in pressure especially in conjunction with a rise in temperature. In the variant shown in Figure 4, the base body 14 is of revolution about a central axis X-X '. It advantageously has a cylindrical, concave, convex, annular or spherical shape. It has a circular or oval cross section. In the case of an oval section, illustrated in FIG. 5, the maximum diameter D 2 is advantageously less than or equal to 1.15 times the minimum diameter D 1.

In this variant, the bottom 22 of the base body 14 is convex left, seen from the interior volume 16. The maximum depth P1 of the bottom 22, taken from the support plane of the base body 14 inwardly following the X-axis X 'is then advantageously greater than or equal to 0.02 times the minimum diameter D1. To ensure good mechanical strength, the maximum thickness E2 of the lateral region 50 facing the bottom 22 between the support plane of the base body 14 and the central region 52 of diameter D1 is greater than 1.2 times the El thickness in the central region 52 of diameter Dl. Preferably, the maximum thickness E3 of the shoulder 19 located between the foot of the neck 18 and the central region 52 is greater than or equal to 1.2 times the maximum thickness E1 in the central region 52 when a pump is snapped into place. is mounted on the neck 18, and is greater than or equal to the thickness E1 with a screwed pump. The inner volume 16 of the base body 14 is between 1 ml and 750 ml, preferably between 10 ml and 250 ml. The cosmetic product 12 occupies, within the base body 14, a volume advantageously between 50% and 95% of the internal volume 16. As indicated above, a dispensing member 20 formed by a pump is advantageously assembled on the body base 14, by breakdown or screwing. A seal between the dispensing member 20 and the base body 14 is guaranteed, even during the rise in temperature and pressure.

When the internal volume 16 is less than 10 ml, in particular less than 8 ml, the pump is advantageously replaced by a leaktight stopper which ensures tightness, even during the rise in temperature and pressure. In this case, the bottle is advantageously composed of the following monolayer or multilayer materials: polyolefin, for example polypropylene or polyethylene, polyester, for example polyethylene terephthalate or polyethylene terephthalate ethylene, cycloolefin copolymers, polyamide, polycarbonate, polymethylpentene (TPX), polyether ether ketone (PEEK), poly tetrafluoroethylene, glass. The dispensing member 20 is made from the same materials or based on polyoxymethylene (POM) or polybutylene terephthalate (PBT).

Advantageously, the dielectric constant is less than 4, especially less than 2.6. The dielectric loss factor is less than 10-2. In another variant, the package 10 is a flexible package, and the base body 14 is for example formed of a bilayer material comprising an inner layer and an outer layer. The inner layer is for example polypropylene or polyethylene, the outer layer being for example polyethylene terephthalate. In another variant, the package 10 is a flexible package, and the base body 14 is formed of a monolayer material. In the example shown in FIG. 6, the base body 14 forms a flexible pouch 60, which is deformable to the touch, presenting on both opposite faces 62 delimiting the internal volume 16.

Each face 62 is formed of a monolayer or preferably multilayer film. The layers of the multilayer film are associated, for example, by extrusion, by rolling, or / and by gluing. The structure of the multilayer film has at least two layers. At least one outer layer allows printing and provides resistance to perforation. At least one inner layer is compatible with the conditioned cosmetic product, is weldable, withstands the temperatures necessary for decontamination and is able to deform. Advantageously, the materials that can be used are polyesters, polyamides and polyolefins. Suitable polyesters are polyalkylene terephthalates having alkyl groups or radicals having 2 to 10 carbon atoms and polyalkyleneterephthalates having alkyl groups or radicals containing 2 to 10 carbon atoms which are interrupted by 1 or 2 -0-. Other preferred polyesters are polyalkylene terephthalates having alkyl groups or radicals containing 2 to 4 carbon atoms and polyethylene terephthalates are most preferred. These polyethylene terephthalates are also A-PET, PETP and the cited PETG or G-PET. Examples of polyolefinic materials are polyethylenes (PE), for example high density polyethylene (HDPE, density greater than 0.944 g / cc), medium density polyethylene (MDPE, density of 0.926 to 0.940 g / cc), linear density polyethylene average (LMDPE, density 0.926 to 0.940 g / cm3), low density polyethylene (LDPE, density 0.910 to 0.925 g / cm3) and linear low density polyethylene (LLDPE, density 0.916 to 0.925 g / cm3), for example under form of unoriented sheets (PE foil) or monoaxially or biaxially oriented (oPE foil), polypropylenes (PP), such as axially or biaxially oriented polypropylene (oPP foil) or cast polypropylene (cPP foil), amorphous polypropylene or crystalline or their mixtures or atactic or isotactic polypropylene or their mixtures, poly-1-butene, poly-3-methylbutene, poly-4-methylpentene and their copolymers, and then polyethylene with viny acetate vinyl alcohol, acrylic acid, such as, for example, ionomeric resins, such as copolymers of ethylene acrylic acid, methacrylic acid, acrylic esters, tetrafluoroethylene or polypropylene, further random copolymers, block copolymers or olefin polymer - elastomer blends. The polyolefinic materials may also include cycloolefins as a monomer of a homopolymer or copolymers.

High density polyethylenes and polypropylenes, as well as ionomers, for example known under the trade name Surlyn, are preferred. Examples of polyamides (PA) for plastic sheets are constituted for example by polyamide 6 homopolymer ε-caprolactam (polycaprolactam); polyamide 11, polyamide 12, γ-laurine-lactam homopolymer (polylaurinelactam); polyamide 6,6, homopolycondensate of hexamethylenediamine and adipic acid (polyhexamethyleneadipamide); polyamide 6, 10, homopolycondensate of hexamethylenediamide and sebacic acid (polyhexamethylenesacamamide); polyamide 6,12, homopolycondensate of hexamethylenediamide and dodecanoic acid diacid (polyhexamethylenedodecanamide) or polyamide 6-3-T, homopolycondensate of trimethylhexamethylenediamide and terephthalic acid polytrimethylhexamethylene terephthalamide), and mixtures thereof. The polyamide sheets are drawn monoaxially or biaxially (oPA).

The thicknesses of the layers can vary from 71..tm to 300pm. Treatments are possible: oxide deposition (SiOx, Al0x, ..), microperforation, organic coating (epoxy, paraxylene, ...) and orientation of the films. Advantageously, the bag 60 is provided with a bellows 64 in its lower part and a dispensing member 20 in its upper part. In this example, the dispensing member 20 has a neck 66 that is more rigid than the pocket 60 and a removable cap 68 that closes the neck 66. A degassing system is advantageously provided in the dispensing member 20. The pocket 60 does not contain any metal element. The size of the pocket 60 is advantageously determined according to its volume and the surface of its faces. In the example shown in Figure 6, the dimensions of the pocket 60 are defined for example by the following formula: Surface (cm2) = 396.18 x volume (cm3) -1702.4. Thus, the volume of the bag varies between 120 ml and 2 I for a surface ranging between 310 cm2 and 1500 cm2. Alternatively, the volume is between 1 ml and 750 ml, especially between 10 ml and 250 ml. The filling volume of cosmetic product 12 is between 50% and 95% of the internal volume 16. The dielectric constant of the materials forming the pocket 60 is preferably less than 2. The dielectric loss factor is preferably less than 10-2.

In another variant, the package 10 is able to allow the distribution of a single dose of cosmetic product 12 to at least one user. It is thus conceivable that the package 10 has an improved resistance to temperatures, microwaves and internal pressures generated by heating of the cosmetic product 12. The method of decontaminating, in particular pasteurization or sterilization and conditioning of the cosmetic product 12 contained in the packaging 10 will now be described with reference to FIG. 2. During an initial step 40, a cosmetic product 12 initially contained in a reservoir is introduced into the package 10, for example via the neck 18. The cosmetic product 12 is for example introduced into the package 10 by a cosmetic product introduction assembly, not shown in the figures. The package 10 is then closed. In the embodiment of Figure 1, the sealed pump 26 is mounted on the neck 18, thus closing the base body 14 containing the cosmetic product 12. The pump 26 seals the cosmetic product 12 contained in the volume In a subsequent step 42, the package 10 containing the cosmetic product 12 is placed in a microwave cavity, known per se. The microwave cavity has for example a thermal transmission power of between 100 W and 6000 W, preferably between 500 W and 6000 W, in particular between 1000 W and 2000 W. The power required is a function of the dielectric permittivity of the product and packaging to be processed.

The microwave cavity is adapted to be controlled by a control unit capable of controlling the microwave cavity to effect a rise in temperature of the cosmetic product 12 contained in the package 10 by microwave heating to a maximum of decontamination temperature, corresponding to a pasteurization or sterilization temperature, then a maintenance of the cosmetic product 12 contained in the package 10 at the decontamination temperature for a decontamination period, suitable for carrying out, for example, pasteurization or sterilization. The microwave cavity is also capable of emitting electromagnetic waves having a frequency of between 800 MHz and 3000 MHz, for example between 2300 MHz and 2600 MHz, in particular 2450 MHz or 915 MHz.

In a subsequent step 44, the package 10 containing the cosmetic product 12 is heated by the microwave cavity. The temperature of the cosmetic product 12 then increases gradually, by microwave heating, until it reaches a predetermined decontamination temperature, in particular pasteurization or sterilization. The sterilization temperature corresponds to a temperature for which, with a sufficient application time at this temperature, all of the microbial germs present in the cosmetic product 12 is removed (e) following the sterilization thresholds defined above. The pasteurization temperature corresponds to the temperature for which, with a sufficient application time at this temperature, the number of microbial germs present in the cosmetic product 12 decreases substantially according to the pasteurization thresholds defined above. The decontamination temperature is greater than or equal to 85 ° C, preferably between 85 ° C and 150 ° C. In this exemplary embodiment, the microwave cavity emits a thermal power substantially equal to 500 W corresponding to electromagnetic waves having a frequency substantially equal to 2450 MHz and the decontamination temperature is for example set at 85 ° C. When the temperature of the cosmetic product 12 reaches the decontamination temperature, a fluid is circulated inside the microwave cavity during a subsequent step 46, so as to maintain the temperature of the cosmetic product 12 constant.

For example, the fluid is circulated in a thermally insulated pipe arranged inside or after the microwave cavity and is maintained at the decontamination temperature by means of fluid heating means arranged within the cavity. . In an advantageous embodiment of the invention, the fluid is air. Thus, during step 46, the temperature of the cosmetic product 12 is maintained at the decontamination temperature for a predetermined decontamination period, in particular a pasteurization or sterilization time. The sterilization time corresponds to a time for which, at the sterilization temperature, the entirety of the microbial germs present in the cosmetic product 12 is eliminated, according to the sterilization thresholds defined above. The pasteurization time corresponds to the time for which, at the pasteurization temperature, the number of microbial germs present in the cosmetic product 12 decreases substantially according to the pasteurization thresholds defined above.

The decontamination time is greater than or equal to 2 minutes. In this embodiment, the pasteurization time is set at 2 minutes.

Advantageously, no electromagnetic radiation is emitted during this period. In a variant, during step 46, the microwave cavity continues to emit electromagnetic radiation capable of heating the cosmetic product 12, simultaneously with the circulation of the fluid inside the microwave cavity. . The joint activity of the electromagnetic radiation of the cavity and the heat conduction by the fluid then makes it possible to maintain the temperature of the cosmetic product 12 at the decontamination temperature. During this step 46, the microwave cavity emits, for example, a thermal power of between 1 W and 6000 W, in particular between 1000 W and 2000 W at the microwave frequencies defined above. This radiation is for example emitted by discrete pulses. In FIG. 3, the curve 100 represents in dashed lines the power emitted, the curve 102 the set temperature and the curve 104 the temperature measured inside the package 10.

At the end of the decontamination period, the cosmetic product 12 contained in the package 10 is cooled by forced cooling during a final step 48. More specifically, the package 10 is introduced into a continuous cooling cell, arranged at the outlet of the microwave cavity. In a variant, the process does not include a forced cooling step 48, the cosmetic product 12 then being cooled by contacting the package 10 with the ambient air, at its outlet from the microwave cavity. The method for decontaminating cosmetic products in its packaging and packaging according to the invention thermally treats the cosmetic product 12, without generating degradation of the composition of this cosmetic product 12, or packaging 10. Decontamination is performed directly on the product 12 packaged, in a closed package thus not requiring separate treatment of the packaging 10, or conditioning under a controlled atmosphere, with the possible exception of a humidity control of the atmosphere in the case of emulsions. In addition, the process for decontaminating cosmetic and conditioning products according to the invention can be implemented continuously in the flow of a packaging line of cosmetic products. This makes it easy to industrialize the sterilization and packaging process. Finally, the decontamination and conditioning process according to the invention makes it possible to obtain a decontaminated cosmetic product, in particular a pasteurized or sterilized product, the composition of which has a "microbiologically clean" state, such a state being able to be stored at room temperature up to a predetermined date corresponding to the expiry date of the product. It is thus conceivable that the method of decontaminating cosmetic and conditioning products according to the invention makes it possible to obtain effective decontamination, while minimizing the interaction with the consumers' body and being easily industrializable. Although the description of the process has been made with reference to a cosmetic product 12 contained in the package 10 illustrated in FIG. 1, or in other packages described in FIGS. 4 and 5, those skilled in the art will of course understand that the method of decontaminating cosmetic and packaging products according to the invention applies in the same manner to any cosmetic product 12 contained in a package, regardless of the characteristics of this package. Furthermore, although the description of the cosmetic product 12 has been made with reference to a skin cleansing product, those skilled in the art will understand that the invention applies equally to any cosmetic product likely to be present. contaminated by microbial growth.

Claims (12)

1. A method for decontaminating cosmetic products, especially pasteurization or sterilization, comprising the following steps: - supply (40) of the cosmetic product (12) in a package (10), - establishment (42) of the packaging (10) containing the cosmetic product (12) in a microwave cavity, - temperature rise (44) of the cosmetic product (12) contained in the package (10) by microwave heating to a temperature of decontamination temperature, and - maintaining (46) the cosmetic product (12) contained in the packaging (10) at the decontamination temperature for a decontamination period adapted to reduce the number of bacteria present in the cosmetic product below a threshold of decontamination, in particular of pasteurization or sterilization. 2.- Method according to claim 1, characterized in that, during the step (46) of maintaining the cosmetic product (12) contained in the package (10) at the decontamination temperature, a fluid is set circulation inside the microwave cavity, the fluid being maintained at the decontamination temperature by heating means arranged within the microwave cavity. 3. A process according to claim 2, characterized in that the step (46) for holding the cosmetic product (12) contained in the package (10) at the decontamination temperature comprises, simultaneously with the circulation of the fluid. inside the microwave cavity, the application of microwave heating. 4. A process according to any one of the preceding claims, characterized in that it further comprises a step (48) for forced cooling of the cosmetic product (12), by introducing the package (10) containing the cosmetic product. (12) in a cooling cell. 5.- Method according to any one of the preceding claims, characterized in that the decontamination temperature is greater than or equal to 85 ° C, preferably between 85 ° C and 150 ° C.35 6. A process according to any one of the preceding claims, characterized in that the cosmetic product (12) is devoid of preservative. 7. A process according to any one of the preceding claims, characterized in that the package (10) is closed before step (42) of establishment in the microwave cavity. 8. A decontamination kit, in particular for pasteurization or sterilization, and for packaging a cosmetic product (12) comprising: a plurality of packages (10) filled with cosmetic product (12); an apparatus for decontamination, in particular pasteurization or sterilization, comprising a microwave cavity adapted to successively receive each package or simultaneously several packages (10); a control assembly of the microwave cavity suitable for controlling the microwave cavity for effecting a temperature rise of the cosmetic product contained in each package by microwave heating to a temperature decontaminating, then maintaining the cosmetic product (12) contained in each package (10) at the decontamination temperature for a period of decontamination adapted to reduce the number of bacteria present in the cosmetic product below a decontamination threshold, including pasteurization or sterilization. 9.- Package (10) containing a cosmetic product (12), characterized in that the cosmetic product (12) is decontaminated, in particular is pasteurized or sterilized, the decontaminated cosmetic product (12) being capable of being obtained by the setting process according to any one of claims 1 to 7. 10.- Package (10) according to claim 9, characterized in that it comprises a base body (14) having a dielectric constant less than 4, preferably between 2.0 and 2.6. 11. Packaging (10) according to one of claims 9 or 10, characterized in that it comprises a base body (14) having a dielectric loss factor of less than 10 -2, preferably between 10-4 and 10.3.35 12.- Package (10) according to any one of claims 9 to 11, characterized in that the cosmetic product (12) is devoid of preservative.