FR2888099A1 - Display unit for cosmetic compositions has magnetic device generating magnetic field to provide modification to orientation or displacement of the bodies - Google Patents

Abstract

A magnetic device (3) generates a magnetic field to provide a modification to the orientation or displacement of the bodies. The composition (C) comprising of the bodies having non zero magnetic susceptibility is provided in an enclosure (2). The dimension of the body ranges from 1 to 700 micro meter. An independent claim is also included for a promoting method of sale of cosmetic composition.

Description

The present invention relates to display stands used to sell

cosmetic products.

  US Re 25,822 discloses the use of magnetic beads in an enclosure, which beads have poles of different colors to enable registration by means of a magnetic writing member.

  The invention particularly relates to a new display comprising: - at least one magnetic device, - at least one product comprising bodies having a non-zero magnetic susceptibility.

  The display unit is arranged so that, when the product is located at least partly inside the magnetic field generated by the magnetic device, a change in the orientation and / or a displacement of at least a portion of said bodies to inside the product can be viewed.

  The magnetic device can thus be positioned or positionable relative to the product so as to allow the visualization of a modification of the orientation and / or displacement of at least a part of said bodies.

  By magnetic device, it is necessary to understand a device capable of generating a magnetic field by means of at least one magnet or electromagnet. The magnetic field generated by the magnetic device is not necessarily permanent.

  Where appropriate, the product may be entirely constituted by said bodies.

  The size of the magnetic particles is for example between 1 nm and 700 m.

  The invention allows a demonstration of new makeup effects and to create an animation likely to attract the attention of consumers present for example in the store where the display is located and thus encourage the purchase of the product.

  The bodies having a non-zero magnetic susceptibility can be contained in at least one enclosure, which can be fixed or mobile, depending on how the invention is implemented. The enclosure may in particular be integral with the display, as the magnetic device The enclosure may have a large apparent surface, for example a vertical transparent wall, of area for example more than 1 dm 2.

  The enclosure can still reproduce, especially on an enlarged scale, the shape of the region of the body on which the composition is intended to be applied, for example the shape of a fingernail.

  The enclosure may also be constituted by a container identical to those used for packaging the cosmetic composition offered for sale, or reproducing its shape on an enlarged scale.

  The magnetic field generated by the magnetic device can make it possible to create a predefined pattern by modifying the orientation and / or by moving bodies having non-zero magnetic susceptibility.

  The interaction between the magnetic field and said bodies may be variable in time, for example so as to periodically appear and disappear at least one pattern.

  The display can include a mechanism for creating a relative movement between the enclosure and at least one magnet or electromagnet of the magnetic device, for example a drive device in displacement of the magnet or the electromagnet. This displacement can be accompanied by a modification of the orientation and / or a displacement of non-zero magnetic susceptibility body, thus changing the appearance of the composition in the enclosure.

  The magnetic device may comprise at least one electromagnet and a device for controlling the electromagnet arranged to feed or not the electromagnet according to its relative position with the enclosure. This can facilitate the formation of complex patterns.

  The magnetic device may comprise at least two electromagnets powered in a manner that is variable in time so as to create a modification of the orientation and / or the intensity of the magnetic field to which the non-zero magnetic susceptibility bodies are subjected. This can make it possible to modify the appearance of the composition without relative movement between the electromagnets and the enclosure.

  The display can comprise at least one container containing the cosmetic product. Such a container may be for sale or not.

  When such a container is not intended for sale and serves for example only to contain non-zero magnetic susceptibility bodies exposed to the magnetic field, the display can include means for holding the container on the display, for example a glue or mechanical blocking, to prevent unscrupulous consumers from seizing it.

  When the container is intended for sale, the display unit is advantageously arranged to allow consumers to expose themselves this container to the magnetic field and observe a change of appearance.

  The magnetic device may comprise at least one magnet or electromagnet arranged to allow a consumer to bring it closer to the container containing the cosmetic product. This magnet or electromagnet can be permanently retained by the display, for example by a cable, a chain or an articulated support arm, or otherwise.

  The display can be configured to allow a consumer to receive at least one product sample and expose it to a magnetic field to change its appearance.

  This sample comes for example from a sample dose dispenser product, present on the display. Alternatively, at least one person may be present next to the display to dispense a sample of product and for example proceed to its application and, if necessary, expose the deposit to a magnetic field.

  The display may comprise a base or means for attachment to a wall or a supporting structure, such as a shelf or a table.

  The invention also relates to a method for promoting the sale of a cosmetic product, this cosmetic product having a non-zero magnetic susceptibility, the method comprising the following steps: subjecting bodies having a non-zero magnetic susceptibility, these bodies belonging to a composition, to a magnetic field so as to move them and / or to change their orientation, -allowing at least one consumer to perceive a change of appearance of the composition thus exposed to the magnetic field.

  The bodies having a non-zero magnetic susceptibility thus exposed to the magnetic field may be identical to those contained in the cosmetic product 30 whose sale is sought to promote or even belong to it.

  Thus, these bodies exposed to the magnetic field may be contained in a chamber within a composition that may or may not be identical to the cosmetic composition whose sale is to be promoted.

  The invention also relates to a method for promoting a makeup product comprising a physiologically acceptable medium in which are dispersed bodies having a non-zero magnetic susceptibility, said method consisting in allowing visitors to a sales outlet of said product, to visualize an orientation modification and / or a displacement of non-zero magnetic susceptibility bodies, when all or part of the product is placed in a magnetic field.

  The point of sale can be real or virtual, being for example a website.

  The invention will be better understood on reading the following detailed description, non-limiting examples of implementation thereof, and on examining the appended drawing, in which: FIG. schematically, in perspective, an example of a display made in accordance with the invention, - Figure 2 is an electrical diagram of an example of a magnetic device, - Figures 3, 4 and 6 schematically represent, in perspective, other examples of displays made in accordance with the invention, and - Figure 5 is a partial sectional view, according to VV of Figure 4.

  The display 1 shown in Figure 1 comprises a demonstration chamber 2 containing a fluid composition and a magnetic device 3 for exposing the composition contained in the chamber 2 to a magnetic field.

  In the example considered, the enclosure 2 is a container identical or similar to those whose sale is sought to be promoted by means of the display rack 1, comprising for example a transparent body 4 made of plastic or glass and a closure cap 5 which can also serve as a gripping member of a not shown applicator, for example a brush for applying the composition to the nails.

  The display unit 1 also comprises a support structure 6 and a display panel 7 containing, for example, advertising information 8.

  The composition contained in the demonstration chamber 2 may be identical to the cosmetic composition whose sale is sought to be promoted.

  This composition contains bodies having a non-zero magnetic susceptibility and the appearance of the composition in the demonstration chamber is likely to be modified following exposure to a magnetic field, which causes a change in orientation and / or or a displacement of the bodies.

  The magnetic field to which the bodies are exposed may be variable in time, for example to create a periodic change in the appearance of the composition, regardless of any consumer action.

  The variability of the magnetic field may be due for example to a relative displacement of the enclosure and a magnetic field source of the magnetic device 3.

  The magnetic device 3 comprises for example at least one magnet or electromagnet driven in displacement relative to the demonstration chamber 2 so that the non-zero magnetic susceptibility bodies contained in the demonstration chamber 2 are exposed to a magnetic field of variable orientation in time.

  This displacement is for example a rotation drive, so as to change the orientation of the magnetic field relative to the enclosure 2. A change in the appearance of the composition inside the enclosure is then caused by a change in orientation and / or displacement of non-zero magnetic susceptibility bodies under the effect of the magnetic field.

  The demonstration chamber 2 rests for example on a fixed base 10, being for example glued on it.

  The magnetic device 3 may alternatively, as illustrated in FIG. 2, comprise a plurality of fixed electromagnets 21 fed sequentially by an electronic control circuit 20 so as to create a magnetic field of variable orientation.

  There is shown in Figure 3 a display according to an alternative embodiment of the invention. This display comprises a dispenser 12 of sample doses of the cosmetic composition containing the bodies having a non-zero magnetic susceptibility and a magnetic device 3 for exposing these bodies to a magnetic field. The dispenser 12 is for example integral with a shelf 13 held by a foot 14.

  The dispenser 12 comprises for example a pump or any other means 16 for taking a sample product dose.

  The magnetic device 3 is for example attached to the tablet 13 by a cable or a chain 15, and comprises for example a permanent magnet. If necessary, the magnetic device 3 may be similar to that proposed for sale in kit with the cosmetic product.

  The display 1 is for example placed next to a rack 18 where are exposed to the sale of products 19 exhibiting properties of change of appearance under the effect of a magnetic field.

  In the example of FIG. 3, a consumer can take a sample dose of product and after, for example, spreading it over a region of skin or integument, exposing by means of the magnetic device 3 the composition thus deposited to a field. magnetic, so as to change the appearance.

  The display 1 shown in Figures 4 and 5 comprises a demonstration chamber 2 having a transparent wall 26, for example flat and vertical, which allows to observe the appearance of the composition C contained therein.

  The enclosure 2 may be secured, for example by its rear face, with a magnetic device 3 making it possible to expose the composition C contained in the enclosure to a magnetic field, in order to create a pattern following a modification of the orientation of the magnetic bodies contained in this composition.

  The magnetic device 3 comprises for example one or more magnets and / or electromagnets moved and / or powered so as to create the desired pattern.

  The magnetic device 3 can be arranged to create and periodically erase one or more patterns, so as to attract the attention of consumers.

  A rotating field such as for example generated by a magnet rotated around itself can create a pattern resembling a sphere. A displacement in translation of the magnet can make it possible to create a band.

  A first magnetic field may be applied to create a pattern and a second magnetic field of different orientation may be exerted to erase this pattern. The first and second magnetic fields can be exercised alternately.

  The display 1 may include one or more shelves 27 for storing articles 19 containing a cosmetic composition having a possibility of change of appearance following exposure to a magnetic field.

  The invention is not limited to the examples of displays that have just been described.

  It is for example possible to have in the demonstration chamber 2, not a composition identical to that which is to promote the sale, but a composition formulated to have a better conservation and / or better compatibility with the materials used to form the enclosure and / or greater susceptibility to the magnetic field. This composition may nevertheless, for example, contain the same magnetic bodies as the cosmetic composition offered to consumers. The composition contained in the demonstration chamber may be devoid of volatile organic solvent or film-forming polymer, if any, while the composition for sale may contain.

  The demonstration chamber can reproduce at least partially, on an enlarged scale, the shape of the region to be made up with the cosmetic composition, for example the shape of a fingernail as illustrated in FIG.

  In an alternative embodiment of the invention, the point of sale is virtual and the promotion of at least one product having magnetic properties can be done by addressing the terminal of the potential consumer at least one image, better a sequence video, for example as a file to download, illustrating the effect of a magnetic field on the appearance of the composition.

  The composition contained in the demonstration chamber and / or proposed to consumers may comprise both magnetic bodies and non-magnetic bodies.

  The presence of magnetic bodies and non-magnetic bodies in the composition may make it possible, for example, to create new optical effects that can be modulated under the effect of a magnetic field.

MAGNETIC BODIES

  Preferably, the magnetic bodies used do not exhibit remanent magnetization in the absence of a magnetic field.

  The magnetic bodies may comprise any magnetic material having a sensitivity to the lines of a magnetic field, whether this field is produced by a permanent magnet or derived from an induction, this material being for example chosen from nickel, cobalt, iron , their alloys and oxides, especially Fe3O4, and also gadolinium, terbium, dysprosium, erbium, their alloys and oxides. The magnetic material may be soft or hard type. The material may especially be soft iron.

  The magnetic bodies may or may not have a multilayer structure, comprising at least one layer of a magnetic material, such as for example iron, nickel, cobalt, their alloys and oxides, especially Fe3O4.

  The magnetic bodies are preferably aspherical, having for example an elongate shape. Thus, when these bodies are subjected to the magnetic field, they tend to orient themselves with their longitudinal axis in the alignment of the field lines, and undergo a change of orientation which results in a change of appearance of the composition. The bodies can be magnetic fibers.

  When the magnetic bodies are substantially spherical particles, preferably their appearance is inhomogeneous, so that a change of orientation induces a change of appearance.

  The amount of magnetic bodies is sufficient so that the appearance of the composition contained in the demonstration chamber and / or offered to consumers can depend on their orientation and / or their location.

  The magnetic substance concentration of the composition contained in the demonstration chamber and / or proposed to consumers is for example between about 0.05 and about 97% by weight, in particular between about 0.1 and about 95% by weight, better between about 0.1 and about 90% by weight, for example of the order of 3% by weight. The size of the magnetic bodies is for example between 1 nm and 700 m, better between 1 m and 500 m, better still between 10 m and 150 m. By dimension, we denote the dimension given by the statistical size distribution to half of the population, called D50.

  Magnetic peppers Magnetic bodies may contain magnetic pigments. Particularly suitable pigments are pearlescent agents comprising Fe3O4 iron oxide. Pigments having magnetic properties are, for example, those sold under the trade names COLORONA BLACKSTAR BLUE, COLORONA BLACKSTAR GREEN, COLORONA BLACKSTAR GOLD, COLORONA BLACKSTAR RED, CLOISONNE NU ANTIQUE SUPER GREEN, MICRONA MATTE BLACK (17437), MICA BLACK (17260), COLORONA PATINA SILVER (17289) and COLORONA PATINA GOLD (117288) from MERCK or FLAMENCO TWILIGHT RED, FLAMENCO TWILIGHT GREEN, FLAMENCO TWILIGHT GOLD, TWILIGHT BLUE FLAMENCO, TIMICA NU ANTIQUE SILVER 110 AB, TIMICA NU ANTIQUE GOLD 212 GB, TIMICA NU-ANTIQUE COPPER 340 AB, ANCIENT TIMICA NU BRONZE 240 AB, CLOISONNE NU ANTIQUE GREEN 828 CB, CLOISONNE NU ANTIQUE BLUE 626 CB, GEMTONE MOONSTONE G 004, ANTIQUE CLOISONNE NU RED 424 CB, CHROMA-LITE BLACK (4498), CLOISONNE NU ANTIQUE RED FLAMBE (code 440 XB), ANCIENT BRONZE NARROW CLOISONNE (240 XB), CLOISONNE NU ANTIQUE GOLD (222 CB) and CLOISONNE NU ANTIQUE COPPER (340 XB) of the company ENGELHARD.

  The magnetic pigments may also comprise metal iron, in particular mild passivated iron, for example obtained by implementing the method described in US Pat. No. 6,589,331. A pigment comprising iron metal may have a better sensitivity to the magnetic field. .

  Magnetic Fibers The term fibers refers to generally elongated bodies, having for example a form factor ranging from 3.5 to 2500 or from 5 to 500, for example from 5 to 150. The form factor is defined by the ratio L / Where L is the length of the fiber and D is the diameter of the circle in which the largest cross-section of the fiber is inscribed.

  The cross section of the fibers may be, for example, in a circle of diameter ranging from 2 nm to 500 m, for example ranging from 100 nm to 100 m, or even from 1 m to 50 m.

  The fibers may for example have a length ranging from 1 m to 10 mm, for example from 0.1 mm to 5 mm, or even from 0.3 mm to 3.5 mm.

  The fibers may have a mass ranging, for example, from 0.15 to 30 denier (mass per gram per 9 km of yarn), for example from 0.18 to 18 denier.

  The cross-sectional shape of the fibers may be arbitrary, for example circular or polygonal, in particular square, hexagonal or octagonal.

  The composition contained in the demonstration enclosure and / or proposed for sale may comprise solid or hollow fibers, independent or interconnected, by

example braided.

  The composition may comprise fibers having blunt and / or rounded ends, for example by polishing.

  The fibers may not have their shape substantially modified when they are introduced into the composition, being for example initially rectilinear and sufficiently rigid to retain their shape. Alternatively, the fibers may have a flexibility allowing them to deform substantially within the composition.

  The fibers may comprise a non-zero content, up to 100%, of a magnetic material chosen from soft magnetic materials, hard magnetic materials, especially based on iron, zinc, nickel, cobalt or manganese and their alloys and oxides, especially Fe3O4, rare earths, barium sulfate, silicon iron alloys, optionally loaded with molybdenum, Cu2MnAl, MnBi, or a mixture thereof, this list not being limiting.

  When the composition comprises fibers containing magnetic particles, the latter may be present for example at least on the surface of the fiber, or even on the surface of the fibers only, inside the fiber alone or else be dispersed within the fiber substantially homogeneously.

  The fibers may comprise for example a non-magnetic core with a plurality of magnetic particles on its surface.

  The fibers may further comprise a synthetic matrix containing a plurality of magnetic grains dispersed therein.

  If necessary, a synthetic material filled with magnetic particles may itself be coated with a non-magnetic bark. Such bark constitutes for example an insulating barrier or the magnetic materials of the ambient medium and / or can bring color. The fibers may comprise a monolithic magnetic core and be coated with a non-magnetic bark, or it may be the opposite.

  The composition may comprise fibers made by extrusion or coextrusion of one or more polymeric materials, in particular thermoplastics and / or elastomers. One of the extruded materials may contain a charge of dispersed magnetic particles.

  The fiber may comprise a synthetic material chosen from polyamides, PET, acetates, polyolefins, especially PE or PP, PVC, amide polyester block, plasticized Rilsan, elastomers, in particular polyester elastomers, PE elastomers, silicone elastomers, nitrile elastomers. or a mixture of these materials, this list not being limiting.

  The composition may contain composite fibers comprising a magnetic core at least partially coated with at least one non-magnetic, synthetic or natural material. The coating of the magnetic core can be done for example by coextrusion around the heart of a bark in a non-magnetic material.

  The coating of the core can still be carried out differently, for example by in situ polymerization.

  The core may be monolithic or have a charge of magnetic grains dispersed in a matrix.

  The composition may also contain composite fibers obtained by coating with a synthetic material, loaded with magnetic particles, a non-magnetic, synthetic or natural core, the core being composed for example of a wood fiber, rayon, polyamide, a plant material, polyolefin, especially polyethylene, nylon e, polyimide-amide, aramid, this list is not limiting.

  The composition contained in the demonstration chamber and / or proposed for sale may also comprise magnetic composite particles, in particular a magnetic latex.

  Magnetic composite particles A magnetic composite particle is a composite material consisting of an organic or inorganic matrix and magnetic grains. The magnetic composite particles may thus comprise on their surface and / or within them grains of a magnetic material. The composite particles may consist of a magnetic core coated with an organic or mineral matrix, or vice versa.

  The size of the magnetic composite particles is for example between 1 nm and 1 mm, better between 100 nm and 500 m, better still between 500 nm and 100 m. By dimension, we denote the dimension given by the statistical size distribution to half of the population, called D50.

  The thesis of C. GOUBAULT, 23 March 2004, recalls in chapter 1 the state of the art in the field of magnetic composite particles, and draws up a list of preparation methods that can be used to prepare magnetic composite particles, namely a separate synthesis of the magnetic grains and the matrix, a synthesis of the magnetic grains in contact with the matrix or a synthesis of the matrix in the presence of the magnetic grains.

  The company KISKER markets composite magnetic particles with a mineral matrix, composed of silica. The companies DYNAL, SERADYN, ESTAPOR and ADEMTECH propose composite magnetic particles with an organic matrix that can also be used in the invention.

  More particularly, the company ESTAPOR markets under the reference M1-070 / 60 magnetic latexes consisting of ferrite grains evenly distributed in a polystyrene matrix, this latex comprising 65% of iron oxide, the average diameter of the polystyrene particles being 890 nm and the solids content by weight of 10%. The magnetic composite particles comprise for example one of the aforementioned magnetic materials.

  Ferrofluid The composition contained in the demonstration chamber and / or proposed for sale may comprise a ferrofluid, that is to say a stable colloidal suspension of magnetic particles, in particular magnetic nanoparticles.

  The particles, of a size for example of the order of a few tens of nanometers, are dispersed in a solvent (water, oil, organic solvent), either with the aid of a surfactant or a dispersing agent, or by electrostatic interactions.

  Ferrofluids are for example prepared by grinding ferrites or other magnetic particles until nanoparticles are obtained which are then dispersed in a fluid containing a surfactant, which is adsorbed on the particles and stabilizes them, or by precipitation in a basic medium. a solution of metal ions.

  Each particle of the ferrofluid has a magnetic moment determined by the size of the particle and the nature of the magnetic material.

  Under the action of a magnetic field, the magnetic moments of the particles tend to align along the field lines, with the appearance of a non-zero magnetization in the liquid. If the field is canceled, there is no hysteresis and the magnetization is canceled.

  Beyond a threshold field value, it is also possible to cause macroscopic changes in the liquid, for example the appearance of peaks or a change in the rheological properties.

  The ferrofluid designation also includes an emulsion of ferrofluid droplets in a solvent. Each drop then contains colloidal magnetic particles in stable suspension. This makes it possible to have a ferrofluid in any type of solvent. The size of the magnetic particles suspended in the ferrofluid is for example between 1 nm and 10 m, better between 1 nm and 1 m, more preferably between 1 nm and 100 nm. By dimension, we denote the dimension given by the statistical size distribution to half of the population, called D50.

  Mention may in particular be made of ferrofluids marketed by the company LIQUIDS RESEARCH LTD under the references: WHKS 1 S9 (A, B or C), which is an aqueous ferrofluid comprising magnetite (Fe3O4), having particles of 10 nm of diameter.

  WHJS1 (A, B or C), which is a ferrofluid based on iso-paraffin and magnetite particles (Fe3O4) 10 nm in diameter.

  BKS25dextran, which is a dextran-stabilized aqueous base ferrofluid, having magnetite particles (Fe3O4) of 9 nm in diameter.

  Strands of particles and / or magnetic fibers The composition may comprise agglomerates of particles or fibers whose largest dimension, for example the length, is for example between 1 nm and 10 mm, for example between 10 nm and 5 mm, or between 100 nm and 1 mm, or between 0.5 m and 3.5 mm, for example between 1 m and 150 m. Dimension refers to that given by the statistical size distribution at half of the population, called D50.

  Magnetic particle chains can be obtained for example by assembling colloidal magnetic particles, as described in Permanently linked monodisperse paramagnetic chains, EM Furst, C. Suzuki, M. Fermigier, AP Gast, Langmuir, 14, 7334-. 7336 (1998), Suspensions of Magnetic Particles, M. Fermigier, Y. Grasselli, Bulletin of SFP (105) July 96, and Flexible Magnetic Filaments and Micromechanical Sensors, C. Goubault, P. Jop, M. Fermigier, J. Baudry, E. Bertrand, J. Bibette, Phys. Rev. Lett., 91, 26, 260802-1-260802-4 (2003).

  It is in particular described in these articles how to proceed to obtain chains of magnetic latex particles comprising a polystyrene matrix containing iron oxide grains and functionalised on the surface, permanently bonded together following a chemical reaction, including covalent bonds between the surfaces of adjacent particles; a method is also described for obtaining ferrofluid emulsion droplet chains, linked together by interactions of a physical nature. The length as well as the diameter of the permanent chains thus obtained can be controlled. Such magnetic chains constitute anisotropic magnetic objects orientable and movable under the effect of a magnetic field.

  The dimensions of the magnetic chains can meet the same conditions as the magnetic fibers.

  GONIOCHROMATIC COLORING AGENT

  In an exemplary implementation of the invention, the composition contained in the demonstration chamber and / or proposed to consumers comprises at least one goniochromatic coloring agent which makes it possible to observe a color change as a function of the angle. observation. This goniochromatic coloring agent may or may not be magnetic.

  When the composition comprises magnetic particles of a certain color and a non-magnetic goniochromatic coloring agent, the latter may be chosen so that the color path substantially passes through the color of the magnetic particles.

  This may for example make it more difficult to detect the magnetic particles in the absence of an orientation thereof under the effect of a magnetic field.

  This may also make it possible to reveal the pattern induced by the orientation of the magnetic particles only under certain conditions of observation and / or illumination of the masked support, which can make it possible to create particularly attractive effects of appearance and disappearance of the motif.

  By goniochromatic coloring agent is meant a coloring agent which makes it possible to obtain, when the composition is spread on a support, a color path in the plane a * b * of the CIE 1976 color space which corresponds to a variation Dh the hue angle h of at least 20 when the angle of view is varied from normal between 0 and 80, for a light incidence angle of 45.

  The color path can be measured for example by means of an INSTRUMENT SYSTEMS brand spectrogoniorflectometer and GON 360 GONIOMETER reference, after the composition has been spread in the fluid state with a thickness of 300 m by means of a spreader. automatically on an ERICHSEN brand contrast card and Typ 24/5, the measurement being made on the black background of the card.

  The goniochromatic coloring agent may be chosen, for example, from interferential multilayer structures and liquid crystal coloring agents.

  In the case of a multilayer structure, this may comprise for example at least two layers, each layer being made for example from at least one material selected from the group consisting of the following materials: MgF2, CeF3, ZnS , ZnSe, Si, SiO2, Ge, Te, Fe2O3, Pt, Va, Al2O3, MgO, Y2O3, S2O3, SiO, HfO2, ZrO2, CeO2, Nb2O5, Ta2O5, TiO2, Ag, Al, Au, Cu, Rb, Ti , Ta, W, Zn, MoSz, cryolite, alloys, polymers and their combinations.

  The multilayer structure may or may not have a symmetry with respect to a central layer at the chemical nature of the stacked layers. Depending on the thickness and nature of the different layers, different effects are obtained.

  Examples of symmetrical interferential multilayer structures are for example the following structures: Fe2O3 / SiO2 / Fe2O3 / SiO2 / Fe2O3, a pigment having this structure being marketed under the name SICOPEARL by the company BASF; MoS2 / SiO2 / mica-oxide / SiO2 / MoS2; Fe2O3 / SiO2 / mica-oxide / SiO2 / Fe2O3; TiO2 / SiO2 / TiO2 and TiO2 / Al2O3 / TiO2, pigments having these structures being marketed under the name XIRONA by the company Merck (Darmstadt).

  The liquid crystal coloring agents comprise, for example, silicones or cellulose ethers onto which mesomorphic groups are grafted. Examples of goniochromatic liquid crystal particles that may be used are those sold by the company Chenix and those sold under the name HELICONE HC by the company Wacker.

  As goniochromatic coloring agent, it is also possible to use certain nacres, pigments with effects on a synthetic substrate, in particular substrate type alumina, silica, borosilicate, iron oxide, aluminum, or interferential holographic flakes from a polyterephthalate film.

  The ratio of the mass proportion of the magnetic bodies to the proportion of goniochromatic coloring agent is for example between 1/4 and 4, being for example between 1/2 and 2, for example about 1.

  The composition may further comprise dispersed goniochromatic fibers. Such fibers may be less than 80 m in length, for example.

  The composition may also comprise at least one diffractive pigment, which may have magnetic properties if appropriate.

DIFFERENT PIGMENT

  For the purposes of the present invention, the term "diffractive pigment" denotes a pigment capable of producing a color variation according to the angle of observation when illuminated by white light, because of the presence of a structure which diffracts light. . Such a pigment is still sometimes called a holographic or rainbow pigment.

  A diffractive pigment may comprise a diffraction grating, capable of, for example, diffracting in defined directions an incident monochromatic ray of light.

  The diffraction grating may comprise a periodic pattern, in particular a line, the distance between two adjacent patterns being of the same order of magnitude as the wavelength of the incident light.

  When the incident light is polychromatic, the diffraction grating will separate the different spectral components of the light and produce a rainbow effect.

  We can usefully refer to the structure of the diffracting pigments in the article Pigments Exhibiting Dfractive Effects by Alberto Argoitia and Matt Witzman, 2002, Society of Vacuum Coaters, 45th Annual Technical Conference Proceedings 2002.

  The diffractive pigment may be made with patterns having different profiles, including triangular, symmetrical or not, crenellated, constant width or not, sinusoidal, staircase.

  The spatial frequency of the network and the depth of the patterns will be chosen according to the degree of separation of the different orders desired. The frequency may vary for example between 500 and 3000 lines per mm.

  Preferably, the particles of the diffractive pigment each have a flattened shape, and in particular are platelet-shaped.

  The same pigment particle may comprise two crossed diffraction gratings, perpendicular or not, of the same linearization or not.

  The diffractive pigment may have a multilayer structure comprising a layer of a reflective material, covered at least on one side with a layer of a dielectric material. The latter can impart better rigidity and durability to the diffractive pigment. The dielectric material may then be chosen for example from the following materials: MgF 2, SiO 2, Al 2 O 3, AlF 3, CeF 3, LaF 3, NdF 3, SmF 2, BaF 2, CaF 2, LiF and their combinations. The reflective material may be chosen for example from metals and their alloys and also from non-metallic reflective materials. Among the metals that can be used include Al, Ag, Cu, Au, Pt, Sn, Ti, Pd, Ni, Co, Rd, Nb, Cr and their materials, combinations or alloys. Such a reflective material may alone constitute the diffractive pigment which will then be monolayer.

  Alternatively, the diffractive pigment may comprise a multilayer structure comprising a core of a dielectric material covered with a reflective layer at least on one side, or even completely encapsulating the core. A layer of a dielectric material may also cover the reflective layer (s). The dielectric material used is then preferably inorganic, and may be chosen for example from metal fluorides, metal oxides, metal sulfides, metal nitrides, metal carbides and their combinations. The dielectric material may be in the crystalline, semicrystalline or amorphous state. The dielectric material, in this configuration, may for example be chosen from the following materials: MgF 2, SiO 2, SiO 2, Al 2 O 3, TiO 2, WO, AlN, BN, B 4 C, WC, TiC, TiN, N 4 Si 3, ZnS, glass particles , diamond-like carbons and their combinations.

  Alternatively, the diffractive pigment may be composed of a preformed dielectric or ceramic material such as a natural lamella mineral, for example peroskovite mica or talc, or synthetic lamellae formed from glass, alumina, SiO2, carbon, iron oxide / mica, mica coated with BN, BC, graphite, bismuth oxychloride, and their combinations.

  In place of a layer of dielectric material, other materials improving the mechanical properties may be suitable. Such materials may include silicone, metal silicides, semiconductor materials formed from Group III, IV and V elements, metals having a centered cubic crystal structure, cermet compositions or materials, semi-conductors -conductors, and their varied associations.

  The diffractive pigment used may especially be chosen from those described in US patent application US 2003/0031870 published on February 13, 2003.

  A diffractive pigment may comprise, for example, the following structure: MgF 2 / Al / MgF 2, a diffractive pigment having this structure being marketed under the name SPECTRAFLAIR 1400 Pigment Silver by the company FLEX PRODUCTS, or SPECTRAFLAIR 1400 Pigment Silver FG. The proportion by weight of the MgF 2 can be between 80 and 95% of the total weight of the pigment.

  Other diffracting pigments are marketed under the names Metalure Prismatic by the company ECKART.

  Other possible structures are Fe / Al / Fe or Al / Fe / Al, which exhibit magnetic or non-magnetic susceptibility.

  The amount of diffractive pigment may vary, by weight relative to the total weight of the first composition, for example from 0.1 to 5%.

  The size of the diffractive pigment may be for example between 5 and 200 m, better between 5 and 100 m, for example between 5 and 30 m.

  The thickness of the diffractive pigment particles may be less than or equal to 3 m, more preferably 2 m, for example of the order of 1 m.

REFLECTIVE PARTICLES

  The composition contained in the chamber 2 and / or proposed to consumers may include for example reflective particles, including glitter, among others, magnetic or not.

  Reflective particles are particles whose size, structure, including the thickness of the layer or layers that constitute it and their physical and chemical nature, and the surface state, allow them to reflect the incident light. This reflection can, if necessary, have sufficient intensity to create on the surface of the composition or mixture, when it is applied to the support to make up, highlight points visible to the naked eye is ie brighter points that contrast with their surroundings while appearing to shine.

  The reflective particles may be selected so as not to significantly alter the coloring effect generated by the coloring agents associated with them and more particularly so as to optimize this effect in terms of color rendering. They may more particularly have a color or a yellow, pink, red, bronze, orange, brown, gold and / or coppery reflection.

  The reflective particles may be present in the composition at a content ranging from 0.5% to 60% relative to the total weight of the composition, in particular from 1% to 30% by weight, in particular from 3% to 10% by weight. .

  These particles may have various forms, in particular be in the form of platelets or globular, in particular spherical.

  The reflective particles, whatever their shape, may have a multilayer structure or not and, in the case of a multilayer structure, for example at least one layer of uniform thickness, especially a reflective material.

  When the reflective particles do not have a multilayer structure, they may be composed for example of metal oxides, including synthetically obtained titanium or iron oxides.

  When the reflective particles have a multilayer structure, these may for example comprise a natural or synthetic substrate, in particular a synthetic substrate at least partially coated with at least one layer of a reflective material, in particular at least one metal or metal material. . The substrate may be monomaterial, multimaterial, organic and / or inorganic.

  More particularly, it may be chosen from glasses, ceramics, graphite, metal oxides, aluminas, silicas, silicates, in particular aluminosilicates and borosilicates, synthetic mica and mixtures thereof, this list not being limiting.

  The reflective material may include a layer of metal or a metallic material.

  Reflective particles are described in particular in JP-A-09188830, JP-A-10158450, JP-A-10158541, JP-A-07258460 and JP-A05017710.

  Still as an example of reflective particles comprising a mineral substrate coated with a metal layer, there may also be mentioned particles comprising a borosilicate substrate coated with silver.

  Particles with a silver-coated glass substrate, in the form of platelets, are sold under the name MICROGLASS METASHINE REFSX 2025 PS by the company TOYAL. Particles with a glass substrate coated with a nickel / chromium / molybdenum alloy are sold under the name CRYSTAL STAR GF 550, GF 2525 by the same company.

  The reflective particles, irrespective of their shape, may also be chosen from particles with a synthetic substrate at least partially coated with at least one layer of at least one metallic material, in particular a metal oxide chosen, for example, from titanium oxides. , especially TiO2, iron including Fe2O3, tin, chromium, barium sulfate and the following materials: MgF2, CrF3, ZnS, ZnSe, SiO2, Al2O3, MgO, Y2O3, SeO3, SiO, HfO2, ZrO2, CeO2 , Nb2O5, Ta2O5, MoS2 and mixtures or alloys thereof.

  By way of example of such particles, mention may be made, for example, of particles comprising a synthetic mica substrate coated with titanium dioxide, or particles of coated glass of brown iron oxide, of titanium oxide, of tin oxide or a mixture thereof such as those sold under the trade name REFLECKS by ENGELHARD.

  The composition contained in the demonstration chamber and / or offered to consumers may include at least one mother-of-pearl, magnetic or not.

  By nacre, it is necessary to understand colored particles of any shape, iridescent or not, in particular produced by certain shellfish in their shell or else synthesized and which exhibit a color effect by optical interference.

  The nacres may be chosen from pearlescent pigments such as iron oxide-coated titanium mica, bismuth oxychloride-coated mica, titanium mica coated with chromium oxide, titanium mica coated with an organic dye. especially of the aforementioned type as well as pearlescent pigments based on bismuth oxychloride. It may also be mica particles on the surface of which are superimposed at least two successive layers of metal oxides and / or organic dyestuffs.

  The nacres may more particularly have a color or a yellow, pink, red, bronze, orange, brown, gold and / or coppery reflection.

  As an illustration of the nacres that may be introduced into the composition, mention may especially be made of gold-colored mother-of-pearl sold in particular by ENGELHARD under the name Brillant gold 212G (Timica), Gold 222C (Cloisonne), Sparkle gold (Timica), Gold 4504 (Chromalite) and Monarch gold 233X (Cloisonne); bronze nacres sold especially by the company Merck under the name Bronze Fine (17384) (Colorona) and Bronze (17353) (Colorona) and by Engelhard under the name Super Bronze (Cloisonne); orange nacres sold especially by the company Engelhard under the name Orange 363C (Cloisonne) and Orange MCR 101 (Cosmica) and by the company Merck under the name Passion Orange (Colorona) and Matte Orange (17449) (Microna); brown-colored pearlescent agents marketed by Engelhard under the name Nu-antique copper 340XB (Cloisonne) and Brown CL4509 (Chromalite); nacres with a copper sheen sold especially by Engelhard under the name Copper 340A (Timica); the nacres with a red glint sold especially by MERCK under the name Sienna fine (17386) (Colorona); yellow-colored pearlescent agents marketed by ENGELHARD under the name Yellow (4502) (Chromalite); the red-colored pearlescent agents with a gold glint sold especially by ENGELHARD under the name Sunstone G012 (Gemtone); pink nacres sold especially by Engelhard under the name Tan opal G005 (Gemtone); the black nacres with gold reflection sold by the company Engelhard under the name Nu antique bronze 240 AB (Timica), the blue nacres sold especially by the company Merck under the name Matte Blue (17433) (Microna), the white nacres with reflection silver sold in particular by the company Merck under the name Xirona Silver and the golden-green orange-colored mother-of-pearl marketed by Merck under the name Indian summer (Xirona) and their mixtures.

OTHER COLORING AGENTS

  The composition contained in the enclosure and / or which one seeks to promote the sale may further include dyes, organic pigments or lacquers. The dyes may be fat-soluble or water-soluble.

  Liposoluble dyes are, for example, Sudan Red, DC Red 17, DC Green 6, (3-carotene, soybean oil, Sudan Brown, DC Yellow 11, DC Violet 2, Orange DC 5, yellow quinoline.

  The water-soluble dyes are, for example, beet juice and methylene blue.

  The dyes may for example represent from 0.1 to 20% of the weight of the composition, or even from 0.1 to 6%, when present.

  The organic lakes or pigments may be chosen from the following materials and their mixtures: cochineal carmine, organic pigments of azo, anthraquinone, indigo, xanthene, pyrenic, quinoline, triphenylmethane or fluoran dyes; organic lakes or insoluble salts of sodium, potassium, calcium, barium, aluminum, zirconium, strontium, titanium, acid dyes such as azo, anthraquinone, indigo, xanthene, pyrenic, quinoline dyes, triphenylmethane, fluoran, these dyes may comprise at least one carboxylic or sulfonic acid group.

  Among the organic pigments, there may be mentioned those known under the following denominations: D & C Blue No. 4, D & C Brown No. 1, D & C Green No. 5, D & C Green No. 6, D & C Orange No. 4, D & C Orange No. 5, D & C Orange No. 10 , D & C Orange No. 11, D & C Red No. 6, D & C Red No. 7, D & C Red No. 17, D & C Red No. 21, D & C Red No. 22, D & C Red No. 27, D & C Red No. 28, D & C Red No. 30, D & C Red No. 31 , D & C Red No. 33, D & C Red No. 34, D & C Red No. 36, D & C Violet No. 2, D & C Yellow No. 7, D & C Yellow No. 8, D & C Yellow No. 10, D & C Yellow No. 11, FD & C Blue No. 1, FD & C Green No. 3 , FD & C Red No. 40, FD & C Yellow No. 5, FD & C Yellow No. 6.

  The organic dyestuff may comprise an organic lacquer supported by an organic support such as rosin or aluminum benzoate, for example.

  Among the organic lakes, mention may be made in particular of those known under the following names: D & C Red n 2 Aluminum lake, D & C Red n 3 Aluminum lake, D & C Red n 4 Aluminum lake, D & C Red n 6 Aluminum lake, D & C Red n 6 Barium Lake, D & C Red # 6 Barium / Strontium Lake, D & C Red # 6 Strontium Lake, D & C Red # 6 Potassium Lake, D & C Red # 7 Aluminum Lake, D & C Red # 7 Barium Lake, D & C Red # 7 Calcium Lake, D & C Red # 7 Calcium / Strontium lake, D & C Red n 7 Zirconium lake, D & C Red 8 Sodium lake, D & C Red 9 Aluminum lake, D & C Red 9 Barium lake, D & C Red 9 Barium / Strontium lake, D & C Red 9 Zirconium lake, D & C Red n 10 Sodium lake, D & C Red n 19 Aluminum lake, D & C Red n 19 Barium lake, D & C Red n 19 Zirconium lake, D & C Red n 21 Aluminum lake, D & C Red n 21 Zirconium lake, D & C Red n 22 Aluminum lake, D & C Red n 27 Aluminum lake, D & C Red n 27 Aluminum / Titanium / Zirconium lake, D & C Red n 27 Barium lake, D & C Red n 27 Calcium lake, D & C Red n 27 Zirconium Lake, D & C Red # 28 Aluminum Lake, D & C Red # 30 Lake, D & C Red # 31 Calcium Lake, D & C Red # 33 Aluminum Lake, D & C Red # 34 Calcium Lake, D & C Red # 36 Lake, D & C Red # 40 Aluminum Lake, D & C Blue n 1 Aluminum lake, D & C Green n 3 Aluminum lake, D & C Orange n 4 Aluminum lake, D & C Orange n 5 Aluminum lake, D & C Orange n 5 Zirconium lake, D & C Orange n 10 Aluminum lake, D & C Orange n 17 Barium lake, D & C Yellow # 5 Aluminum Lake, D & C Yellow # 5 Zirconium Lake, D & C Yellow # 6 Aluminum Lake, D & C Yellow # 7 Zirconium Lake, D & C Yellow # 10 Aluminum Lake, FD & C Blue # 1 Aluminum Lake, FD & C Red # 4 Aluminum Lake, FD & C Red 40 Aluminum Lake, FD & C Yellow No. 5 Aluminum Lake, FD & C Yellow No. 6 Aluminum Lake.

  The chemical materials corresponding to each of the organic dyestuffs mentioned above are mentioned in International Cosmetic Ingredient Dictionary and Handbook, Edition 1997, pages 371 to 386 and 524 to 528, published by The Cosmetic, Toiletry, and Fragrance Association.

  The composition proposed to the consumers and / or contained in the demonstration chamber may comprise a composite pigment.

  The composite pigment may be composed in particular of particles comprising: an inorganic core, magnetic or not, at least one at least partial coating of at least one organic dyestuff.

  At least one binder can advantageously contribute to the fixing of the organic dyestuff on the inorganic nucleus.

  The composite pigment particles may have various shapes. These particles may in particular be platelet-shaped or globular, in particular spherical, and may be hollow or solid. Platelet-shaped means particles whose ratio of the largest dimension to the thickness is greater than or equal to 5.

  A composite pigment may have, for example, a specific surface area of between 1 and 1000 m 2 / g, in particular between 10 and 600 m 2 / g approximately, and in particular between 20 and 400 m 2 / g approximately. The specific surface is the value measured by the BET method.

  The inorganic core of the composite pigment may be of any form suitable for fixing particles of organic dyestuff, for example spherical, globular, granular, polyhedral, acicular, fusiform, flattened in the form of flakes, grains of rice, tortoiseshell as well as a combination of these forms, this list not being limiting.

  The ratio of the largest dimension of the core to its smallest dimension can be between 1 and 50.

  The inorganic core may have a size of between about 1 nm and about 100 nm, or even between about 5 nm and about 75 nm, for example between about 10 nm and about 50 nm.

  The inorganic nucleus may be made of a material chosen from the nonlimiting list comprising metal salts and metal oxides, in particular oxides of titanium, zirconium, cerium, zinc, iron, ferric blue, aluminum and aluminum. chromium, alumina, glasses, ceramics, graphite, silicas, silicates, especially aluminosilicates and borosilicates, synthetic mica, and mixtures thereof.

  The oxides of titanium, in particular TiO 2, of iron, in particular Fe 2 O 3, of cerium, of zinc and of aluminum, the silicates, in particular the aluminosilicates and the borosilicates, are very particularly suitable.

  The inorganic core may have a specific surface area, measured by the BET method, for example between about 1 m 2 / g and about 1000 m 2 / g, more preferably between about 10 m 2 / g and about 600 m 2 / g, for example between about 20 m 2 / g m2 / g and about 400 m2 / g.

  The inorganic core can be colored, if necessary.

  The organic dyestuff may be as defined above.

  The binder of the composite pigment can be of any type since it allows the organic dyestuff to adhere to the surface of the inorganic core.

  The binder can in particular be chosen from a nonlimiting list comprising silicone materials, polymeric, oligomeric or similar materials, and in particular from organosilanes, fluoroalkylated organosilanes and polysiloxanes, for example polymethylhydrogenosiloxane, as well as various coupling agents, such as coupling agents based on silanes, titanates, aluminates, zirconates and mixtures thereof.

  The coloring agent may comprise a photochromic dyestuff or photochromic agent.

  In general, a photochromic coloring agent is a coloring agent having the property of changing color when it is illuminated by ultraviolet light and restoring its initial color when it is no longer illuminated by this light. to go from an uncolored state to a colored state and vice versa. In other words, such an agent has different hues depending on whether it is illuminated by light containing a certain amount of UV radiation as in sunlight or artificial light.

  It will be useful to refer to the examples of photochromic agents described in EP 1 410 786.

  For example, the thermochromic agent marketed under the reference KROMAFAST YELLOW 5GX 02- may be used by KROMACHEM LTD.

  The composition proposed to consumers and / or contained in the demonstration chamber may also comprise piezochromic compounds, especially tribochromic compounds, or solvatochromes.

  The composition proposed to consumers and / or contained in the demonstration chamber 5 may comprise for example at least one charge, magnetic or not. CHARGES By charge, are meant particles of any form, insoluble in the medium of the composition, regardless of the temperature at which the composition is manufactured. A filler can serve in particular to modify the rheology or the texture of the composition. The nature and quantity of the particles may depend on the desired mechanical properties and textures.

  Examples of fillers that may be mentioned include talc, mica, silica, kaolin, sericite, polyamide, polyolefin powders, for example polyethylene, polytetrafluoroethylene, polymethyl methacrylate , polyurethane, starch powders and silicone resin beads.

  The fillers may be intended to create, inter alia, a blur effect, especially in the case of a foundation, in order to hide skin imperfections. OTHER COMPOSITIONS The composition proposed to consumers comprises a physiologically acceptable medium. By physiologically acceptable medium is meant a non-toxic medium that can be applied to the skin, integuments or lips of human beings. The physiologically acceptable medium is generally adapted to the nature of the support on which the composition is to be applied and to the form in which the composition is packaged.

  The composition contained in the demonstration chamber may or may not comprise a physiologically acceptable medium.

  The composition contained in the demonstration chamber or proposed to the consumers may comprise other ingredients than those described above, in particular at least one solvent, a fatty phase, a film-forming polymer and / or a dermatological or cosmetic active agent, in particular depending on the composition. of the galenic form.

  The composition contained in the enclosure and / or proposed to consumers may comprise at least one aqueous or organic solvent, especially at least one volatile solvent, especially a volatile oil.

  When the composition comprises one or more organic solvents, these solvents may be present in a content ranging from 0.1% to 99%, relative to the total weight of the composition.

  In general, the amount of solvent (s), in particular organic (s), will depend on the nature of the support on which the composition is intended to be applied.

  The composition may comprise at least one organic solvent chosen from the following list: ketones that are liquid at ambient temperature, such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone or acetone; alcohols which are liquid at room temperature, such as ethanol, isopropanol, diacetone alcohol, 2-butoxyethanol or cyclohexanol; glycols that are liquid at room temperature, such as ethylene glycol, propylene glycol, pentylene glycol or glycerol; propylene glycol ethers which are liquid at ambient temperature, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate or dipropylene glycol mono-butyl ether; short-chain esters (having from 3 to 8 carbon atoms in total) such as ethyl acetate, methyl acetate, propyl acetate, n-butyl acetate, acetate isopentyl; alkanes which are liquid at ambient temperature, such as decane, heptane, dodecane and cyclohexane.

  The composition may also comprise water or a mixture of water and hydrophilic organic solvents commonly used in cosmetics such as alcohols and in particular linear or branched lower monoalcohols having from 2 to 5 carbon atoms, such as ethanol, isopropanol or npropanol, polyols such as glycerine, diglycerine, propylene glycol, sorbitol, penthylene glycol, polyethylene glycols. The first composition may further contain C 2 ethers and C 2 -C 4 hydrophilic aldehydes. The water or the mixture of water and hydrophilic organic solvents may be present in the first and / or second composition in a content ranging for example from 0% to 90%, especially 0.1% to 90% by weight, and preferably from 0% to 60% by weight, especially 0.1% to 60% by weight, relative to the total weight of the composition.

  The composition, for example when it is intended to be applied to the lips, may comprise a fatty phase and especially at least one fatty substance that is liquid at room temperature (25 ° C.) and / or a fatty substance that is solid at room temperature, such that the waxes, pasty fatty substances, gums and mixtures thereof. The fatty phase may further contain lipophilic organic solvents.

  The composition may for example have a continuous fat phase, which may contain less than 5% water, especially less than 1% water relative to its total weight and in particular be in anhydrous form.

  As liquid fatty substances at ambient temperature, often called oils, mention may be made of: vegetable hydrocarbon-based oils such as liquid triglycerides of fatty acids with 4 to 10 carbon atoms, for instance triglycerides of heptanoic or octanoic acids, or oils of sunflower, corn, soybean, grape seed, sesame, apricot, macadamia, castor oil, avocado, caprylic / capric acid triglycerides, jojoba oil, shea butter, lanolin, acetylated lanolin; linear or branched hydrocarbons of mineral or synthetic origin, such as liquid paraffins and derivatives thereof, petroleum jelly, polydecenes, hydrogenated polyisobutene such as parleam; esters and synthetic ethers, in particular of fatty acids, for example purcellin oil, isopropyl myristate, 2-ethylhexyl palmitate, octyl-2-dodecyl stearate, erucate octyl-2-dodecyl, isostearyl isostearate; hydroxylated esters such as isostearyl lactate, octyl hydroxystearate, octyldodecyl hydroxystearate, diisostearyl malate, triisocetyl citrate, heptanoates, octanoates, decanoates of fatty alcohols; isononyl isonanoate, isopropyl lanolate, tridecyl trimellilate, diisostearyl malate; polyol esters such as propylene glycol dioctanoate, neopentyl glycol diheptanoate, diethylene glycol diisononanoate; and pentaerythritol esters; fatty alcohols having 12 to 26 carbon atoms such as octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleyl alcohol; partially hydrocarbon and / or silicone fluorinated oils; silicone oils, such as volatile or nonvolatile polymethylsiloxanes (PDMS), linear or cyclic, liquid or pasty at room temperature, such as cyclomethicones, dimethicones, optionally comprising a phenyl group, such as phenyl trimethicones, phenyltrimethylsiloxydiphenylsiloxanes or diphenylmethyldimethyltrisiloxanes, diphenyl dimethicones, phenyl dimethicones, polymethylphenyl siloxanes; their mixtures. The oils may be present in a content ranging from 0.01 to 90%, and more preferably from 0.1 to 85% by weight, relative to the total weight of the composition.

  The presence of an oily phase may impart gloss and have, for example, a refractive index of between 1.47 and 1.51, more preferably between 1.48 and 1.50. The refractive index is measured at room temperature (25 C), using a refractometer.

  The composition proposed to consumers and / or contained in the demonstration chamber may comprise a pasty fatty substance, a wax or an eraser.

  The pasty fatty substances are generally hydrocarbon compounds with a melting point of between 25 and 60 ° C., preferably between 30 and 45 ° C., and / or a hardness of between 0.001 and 0.5 MPa, preferably between 0.005 and 0, 4 MPa, such as lanolins and their derivatives.

  The waxes can be solid at room temperature (25 ° C.), with reversible solid / liquid state change, having a melting temperature greater than 30 ° C., up to 200 ° C., a hardness greater than 0.5 MPa, and having in the solid state an anisotropic crystalline organization. In particular, the waxes may have a melting temperature of greater than 25 ° C. and better still greater than 45 ° C. The waxes may be hydrocarbon-based, fluorinated and / or silicone-based and may be of vegetable, mineral, animal and / or synthetic origin. As useful waxes, mention may be made of beeswax, carnauba or candelilla wax, paraffin wax, microcrystalline waxes, ceresin or ozokerite; synthetic waxes such as polyethylene or Fischer Tropsch waxes, silicone waxes such as alkyl or alkoxydimethicone containing from 16 to 45 carbon atoms. The composition may contain from 0 to 50% by weight of waxes, relative to the total weight of the composition, or even from 1 to 30% by weight.

  The gums that can be used are generally high molecular weight polydimethylsiloxanes (PDMS) or cellulose gums or polysaccharides.

  The composition contained in the enclosure and / or proposed to consumers may also comprise, for example, a film-forming polymer, especially in the case of a mascara or a nail polish. "Film-forming polymer" means a polymer capable of forming, by itself or in the presence of an auxiliary film-forming agent, a continuous and adherent film on a support, in particular on keratin materials.

  Among the film-forming polymers that may be used in the composition, mention may be made, inter alia, of synthetic polymers, of radical type or of polycondensate type, polymers of natural origin, such as nitrocellulose or cellulose esters, and mixtures thereof.

  The radical-type film-forming polymers may in particular be vinyl polymers or copolymers, in particular acrylic polymers.

  The vinyl film-forming polymers may result from the polymerization of ethylenically unsaturated monomers having at least one acidic group and / or esters of these acidic monomers and / or amides of these acidic monomers, such as α, β-ethylenically unsaturated carboxylic acids. as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid.

  The vinyl film-forming polymers can also result from the homopolymerization or copolymerization of monomers chosen from vinyl esters such as vinyl acetate, vinyl neodecanoate, vinyl pivalate, vinyl benzoate and t-butyl benzoate. vinyl and styrene monomers such as styrene and alpha-methyl styrene.

  Among the film-forming polycondensates, there may be mentioned polyurethanes, polyesters, polyesters amides, polyamides, and polyureas, this list not being limiting.

  The polymers of natural origin, optionally modified, may be selected from shellac resin, sandarac gum, dammars, elemis, copal, cellulosic polymers, such as nitrocellulose, ethylcellulose or selected nitrocellulose esters. for example, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, and mixtures thereof.

  The film-forming polymer may be present in the form of solid particles in aqueous or oily dispersion, generally known as latex or pseudolatex.

  The film-forming polymer may comprise one or more stable dispersions of generally spherical polymer particles of one or more polymers in a physiologically acceptable liquid fatty phase. These dispersions are generally referred to as NAD (Non-Aqueous Dispersion) polymer as opposed to latexes which are aqueous polymer dispersions. These dispersions can in particular be in the form of polymer nanoparticles in stable dispersion in said fatty phase. The nanoparticles are preferably of a size between 5 and 600 nm. The techniques for preparing these dispersions are well known to those skilled in the art.

  As the aqueous dispersion of film-forming polymer, it is possible to use the acrylic dispersions sold under the names NEOCRYL XK-90, NEOCRYL A-1070, NEOCRYL A-1090, NEOCRYL BT-62 'NEOCRYL A-1079, NEOCRYL A-523 by the company AVECIA -NEORESINS, DOW LATEX 432 by the company DOW CHEMICAL, DAITOSOL 5000 AD by the company DAITO KASEI KOGYO; or the aqueous polyurethane dispersions sold under the trade names NEOREZ R-981, NEOREZ R-974 by the company AVECIA-NEORESINS, the AVALURE UR-405, AVALURE UR-410, AVALURE UR-425, AVALURE UR-450, SANCURE 875 , SANCURE 861, SANCURE 878, SANCURE 2060 by the company GOODRICH, IMPRANIL 85 by the company BAYER, AQUAMERE H-1511 by the company HYDROMER; sulfopolyesters sold under the trade name Eastman AQ by Eastman Chemical Products.

  The composition may also comprise an auxiliary film-forming agent promoting the formation of a film with the film-forming polymer.

  The composition proposed to consumers and / or contained in the enclosure may comprise at least one cosmetic or dermatological active. As cosmetic, dermatological, hygienic or pharmaceutical active agents that can be used in the compositions of the invention, mention may be made of moisturizers (polyol as glycerol), vitamins (C, A, E, F, B, or PP), essential fatty acids, essential oils, ceramides, sphingolipids, liposoluble sunscreens or in the form of nano-particles, the specific active agents for the treatment of the skin (protection agents, antibacterials, anti-wrinkles ...), self-tanning agents. These active agents may be used, for example, at concentrations of 0 to 20% and especially from 0.001 to 15% relative to the total weight of the composition.

  The composition proposed to consumers and / or contained in the enclosure may also contain ingredients commonly used in cosmetics, such as for example thickeners, surfactants, trace elements, moisturizers, softeners, sequestering agents, perfumes, agents alkalizing or acidifying agents, preservatives, antioxidants, UV filters, dyes or mixtures thereof.

  The composition may comprise, depending on the type of application envisaged, the constituents conventionally used in the fields under consideration, which are present in an amount appropriate to the desired dosage form.

  The composition contained in the demonstration enclosure and / or offered to consumers can be in various forms, depending on its destination. The composition may thus be in any galenical form normally used for topical application and especially in anhydrous form, in the form of an oily or aqueous solution, an oily or aqueous gel, an oil-in-water emulsion, water in water or oil, wax in water or water in wax, a multiple emulsion, an oil dispersion in water through vesicles at the oil / water interface. Kits

  The composition proposed to consumers may be in the form of a kit comprising a magnetic device arranged to generate a magnetic field strong enough to be able to change the orientation and / or the position of the magnetic particles within the composition after application to a support such as skin, mucous membranes, superficial body growths or keratinous fibers, so as to change the appearance thereof.

  This magnetic device may comprise a permanent magnet or an electromagnet, powered for example by at least one battery or accumulator. In the latter case, the magnetic device may comprise a switch for selectively supplying the electromagnet with electricity.

  The magnetic device of the kit can be arranged to create a magnetic field whose orientation varies over time. When the magnetic device comprises a magnet, the device may for example comprise a motor for rotating the magnet. Alternatively, the magnetic device may comprise a plurality of solenoids arranged to generate, when fed sequentially with electricity, a rotating magnetic field.

  For example, a rotating magnetic field may be used to obtain a pattern having a symmetry of revolution, for example a pattern giving the impression of a sphere in relief.

  The electromagnet (s) can be powered continuously or intermittently, at the user's choice. In particular, the magnetic device of the kit may be arranged in such a way that the electromagnet (s) may not be powered until the magnetic device is positioned correctly close to the support coated with the composition.

  The magnetic field is, for example, at least 50 mT, or even at least 0.2 T or 1 T. In order to make the application of the magnetic field easier, the magnetic device of the kit may comprise a device making it possible to position it relative to the support on which the composition was deposited. This may make it possible, for example, to prevent the magnetic device from accidentally coming into contact with the composition and / or to center the pattern produced on the region concerned.

  The magnetic device of the kit may be integral with an applicator for applying the cosmetic composition. This can reduce the number of objects handled by the user and facilitate makeup.

  The magnetic device of the kit may comprise a magnet mounted at a first end of a rod whose second end is connected to a gripping member of an applicator for applying the cosmetic composition.

  The magnetic field can also be exerted by means of a magnetic structure, in particular flexible structure, comprising an alternation of N and S poles. Such a structure can make it possible, for example, to produce repetitive patterns on the composition, for example stripes.

  The kit may include a housing housing the cosmetic composition and the magnetic device. In this case, the housing may comprise for example a plurality of magnets of different shapes to achieve different patterns.

  The kit may further comprise a second cosmetic composition to be applied to the first or the support before applying the first composition.

  The second composition may be transparent and be intended for example for application to the lips, nails or skin. It may comprise at least one of the components described above.

  Nitrocellulose 11 N-ethyl o, p-toluenesulfonamide 5 Alkyd resin 10 Isopropanol 4 Magnetic pigments * 0.5 Butyl acetate / ethyl acetate 50/50 Qs 100 * Nacres containing at least 14% of reference Fe304 COLORONA PATINA GOLD ( 117288) marketed by MERCK.

  Example B: Nitrocellulose Nitrocellulose 11 N-Ethyl O, Poluene Sulfonamide 5 Alkyd Resin 10 Isopropanol 4 COLORONA BLACKSTAR GOLD, MERCKK (Magnetic Pigments) 2.5 SICOPEARL FANTASTICO ROSE, BASFe (Goniochromatic Pigments) 2.5 Butyl Acetate / Acetate 50/50 Example 100 Example C: Nitrocellulose Nitrocellulose 11 N-ethyl o, ptoluenesulfonamide 5 Alkyd resin 10 Isopropanol 4 Magnetic pigments * 0.5 Pigments with diffracting optical effect * * 3% Butyl acetate / ethyl acetate 50/50 Qsp 100 * Nacres containing at least 14% of reference Fe3O4 COLORONA PATINA GOLD (117288) sold by MERCK.

  * * Pigments marketed under the name SPECTRAFLAIR by the company FLEX PRODUCTS.

  Example D: Octyl-2 dodecanol lipstick Ditertiobutyl 4-hydroxytoluene 0.07 Polybutene (95/5 monoolefins / isoparaffins) (MW: 2060) 50 Mixture of isopropyl p-hydroxybenzoates, iso-butyl, n-butyl 0.4 (40/30/30) Pentaerythrityl Tetra-iso-Stearate 11.33 Tridecyl Tri-Mellitate 13 2-Decyltetradecanoic Acid Triglyceride (GUERBET C24) 15 Magnetic Pigments * 0.2 * Nacres containing at least 14% of Fe3O4 marketed under the reference CLOISONNE NU ANTIQUE GREEN 828 CB by ENGELHARD.

  Example E: Foundation Cream Magnesium Sulphate 1.5 Sodium Carboxymethyl Cellulose 0.5 Modified Hectorite Distearyl Dimethyl Ammonium 1 Cyclopenta dimethylsiloxane 16 Glycerol 5 Mixture of poly-methylcetyl dimethyl methysiloxane oxyethylene, isostearate polyglycerol (4 moles) laurate hexyl Water 31.6 Ethylene glycol stearate acetyl mixture, glyceryl tristearate 0.3 Brown iron oxide coated with aluminum stearoyl glutamate (97/3) 1.58 Stearoyl glutamate-coated anatase titanium oxide (97/3) / 3) 18,17 Yellow iron oxide coated with aluminum stearoyl glutamate (93/3) 4.56 Black iron oxide coated with aluminum stearoyl glutamate (97/3) 0.69 Poly dimethylsiloxane (viscosity: 5 cst) 6 Magnetic pigments * 0.5 1,2-pentanediol 3 * Nacres with at least 14% Fe3O4 sold by Merck under the reference TIMICA NU ANTIQUE BRONZE 240 AB.

  The expression containing one must be understood as being synonymous with at least one, unless the opposite is specified. The expression between 5 must be understood as inclusive.

  The invention is not limited to the illustrated examples. Other legs or means of attachment to the wall or a supporting structure such as a table or shelf can be used.

Claims (18)

  1. Display (1) of make-up products comprising: 5 - at least one magnetic device (3), - at least one product comprising bodies having a non-zero magnetic susceptibility, the display unit being arranged so that, when the product is at least partly within a magnetic field generated by the magnetic device (3), a change in orientation and / or displacement of at least a portion of said bodies within the product may nt) be visualized (s).   2. Display stand according to claim 1, wherein the size of the body is between 1 m and 700 m.   3. Display stand according to claim 1 or 2, wherein the bodies having a non-zero magnetic susceptibility are contained in at least one demonstration chamber (2).   4. Display according to claim 3, wherein the demonstration chamber (2) is fixed, in particular being integral with the display.   5. Display unit according to claim 3, wherein the demonstration chamber is movable, in particular being secured to the display.   6. Display unit according to any one of claims 3 to 5, wherein the enclosure has a large apparent surface.   7. Display unit according to any one of claims 3 to 6, wherein the enclosure reproduces, on an enlarged scale, the shape of the region of the body on which a cosmetic composition associated with the display is intended to be applied.   8. Display unit according to any one of claims 3 to 7, wherein the enclosure is constituted by a container identical to those used for packaging a cosmetic composition associated with the display.   A display as claimed in any one of the preceding claims, wherein the magnetic field is generated by the magnetic device (3) so as to create a predefined pattern.   10. Display unit according to any one of the preceding claims, wherein the magnetic device (3) comprises a mechanism for creating a relative movement between the enclosure and at least one magnet or electromagnet.   11. Display unit according to any one of claims 1 to 10, wherein the magnetic device comprises at least two electromagnets fed in a manner variable in time, so as to create a change in the orientation and / or intensity of the magnetic field to which bodies with non-zero magnetic susceptibility are subjected.   12. Display unit according to any one of claims 1 to 11, comprising at least one container containing a cosmetic composition having a non-zero magnetic susceptibility.   13. Display according to claim 12, comprising means for retaining the container on the display.   14. Display according to claim 12 or 13, being arranged to allow consumers to expose the container themselves to a magnetic field produced by the magnetic device (3) and observe a change in appearance.   A display as claimed in any one of the preceding claims, being configured to allow a consumer to receive at least one sample of product and to expose it to a magnetic field to change its appearance.   16. Display according to the preceding claim, comprising a product sample dose dispenser.   17. Display stand according to any one of claims 1 to 16, comprising a base or means for attachment to a wall or a load-bearing structure such as a shelf or a table.   18. A display as claimed in any one of the preceding claims, wherein the magnetic bodies comprise metal iron.