JP2015503604A - Solid cosmetic composition with magnetic effect - Google Patents

Abstract

The present invention is a solid composition, especially in the form of a product cast as a stick or with cupels, comprising one or more magnetic bodies (1) having an outer surface and a non-zero magnetic susceptibility. These magnetic bodies (1) are non-randomly oriented in the solid composition in at least a part of the outer surface to form one or more patterns (5) on the outer surface. The present invention relates to a solid composition.

Description

  The present invention relates to solid cosmetic compositions, in particular solid cosmetic compositions for caring for and / or making up skin, in particular the skin of the body, hands, neck, face and lips.

  More particularly, the compositions targeted according to the invention can constitute body and / or lip makeup products, in particular having non-therapeutic care and / or treatment properties.

  In general, these products contain inorganic fillers and / or pigments in adjustable proportions, in addition to fatty phases such as waxes and / or oils, to impart a light and / or various cosmetic properties to the product. Contains. It is therefore a known practice to introduce fillers into the composition in order to adapt the properties of this type of composition with respect to texture, in particular to thicken the composition. Similarly, fillers are commonly incorporated into lipsticks to limit the movement of oil into the fine lines of the lips.

  Women use a variety of makeup products to beautify their lips.

  Lip gloss, lip pencils and lipsticks create excellent shape and volume by virtue of gloss, color and contrast effects. These expensive cosmetic wands include a combination of application and professional application operations.

  Lip products that combine lipsticks and liners are known that simplify application. The grape core is composed of a light lipstick and the contour acting as a liner is a dark color. When the product is deposited on the lips, a bright and glossy color spreads in the center of the lips and a darker color spreads around the lips, creating a shadow that gives the illusion that the lips are more voluminous.

  These products provide an inexpensive, simple and temporary means for creating thick lips.

  The grapes of these two compounds take different forms and combine different colors.

  However, at present it is not possible to obtain lipsticks consisting of complex patterns, in particular aesthetic or novel patterns. The reason is that currently available lipsticks containing several visible phases are generally formed from a cylindrical core made of a first color, which is coated with a layer of another color. Because it is. There are few options available to consumers beyond this style.

  In addition, care or makeup non-fluid products sometimes have an annoying tendency to have areas of weakness at the interface. This is detrimental to the user. Users have found, for example, that two-phase lipstick wands are more fragile than standard monochromatic wands. Thus, the coating can gradually collapse as the wand is consumed.

  Furthermore, the peripheral layer of certain sticks, known as liners, is currently very thin in the intended part of the grape. This leads to a rough deposit on the lip edge that is not fully visible. Thus, the result of makeup with a three-dimensional effect and a desired effect is still far from ideal.

  In order to improve the aesthetics of a particular stick, the stick has a chamfered shape. Nevertheless, at present it is not possible to generate all the chamfers desired for a two-phase stick. In addition, as the stick wears out, the benefits of the starting product gradually disappear.

  With current two-phase sticks, it is even known that there is a risk of poor adhesion between the two colored layers and slippage that degrades the product.

International Publication No. 02/036992 International Publication No. 98/46436 US Pat. No. 6,658,331 European Patent No. 1411069 International Publication No. 04/028488

Permanently linked monodisperse paramagnetic chains, E.M.Furst, C. Suzuki, M. Fermigier, A.P.Gast, Langmuir, Vol. 14, 7334-7336 (1998) Suspensions de particules magnetiques, M. Fermigier, Y. Grasselli, Bulletin de la SFP (105), July 1996 Flexible magnetic filaments as micromechanical sensors, C. Goubault, P. Jop, M. Fermigier, J. Baudry, E. Bertrand, J. Bibette, Phys. Rev. Lett., 91, 26, 260802-1 to 260802-4 ( (2003)

  Therefore, there is a need to provide a solid composition for making up and / or caring for the skin and / or lips that does not have the disadvantages described above.

  The present invention is a solid composition, particularly in the form of a product cast as a stick or with cupels, which contains one or more magnetic bodies having an outer surface and a non-zero magnetic susceptibility, The magnetic material according to claim 1, wherein at least a part of the outer surface is non-randomly oriented in the solid composition, thereby forming one or more patterns on the outer surface.

  Preferably, the composition according to the invention is cast while hot, in particular between 75 ° C and 120 ° C.

  According to the present invention, a magnetic material with a non-zero magnetic susceptibility is mobile due to the effect of a magnetic field, especially when the composition is a fluid.

  As an example of a known method for producing a non-fluid composition, document WO 02/036992 describes the steps of molding a core, solidifying, and then depositing the liquid composition on the solidified core. And a lipstick obtained by the process. A lipstick that emphasizes the thickness of the lips is further described in WO 98/46436. This lipstick is manufactured in a mold with several movable partitions. Initially, a core is made and solidified in a first region of a mold with a first movable partition. These partitions are removed as soon as they have solidified. Another portion is cast with a different color in the second region having the second movable wall. When this second part is cast, the partition is removed. A third part and then a fourth part can also be made in this way.

  Other methods known to those skilled in the art are different from double casting methods, such as spraying and printing. The method also makes it possible to generate a color pattern on the makeup wand contour. However, they are neither precise nor efficient. In the case of a composition in the form of a lipstick stick, the cosmetic makeup of the surface is obtained by spraying with a pearlescent agent. This type of makeup requires a specific tool, which is still expensive. Furthermore, in this method, the stick is entirely covered with a thin film of pearlescent agent. The generation of the pattern is even more difficult because the pearlescent agent is held in any way by the stick.

  Accordingly, there is a need to provide a method for producing a solid composition for making up and / or caring for the skin and / or lips that is simpler and less expensive than the above method.

One subject of the invention is also a method of producing a solid cosmetic composition cast as a stick or with cupel, comprising:
-Preparing a fluid cosmetic composition comprising one or more magnetic bodies having a non-zero magnetic susceptibility;
-Casting the cosmetic composition as a stick or cupel while hot;
-When the composition is a fluid, altering the orientation of the magnetic body (1) and / or at least partly exposing the magnetic body (1) by at least partially exposing the composition to a magnetic field (10) Moving the magnetic material (1) in a non-random manner in the solid composition.

  The magnetic material used in the method of the present invention is mobile, particularly when the composition is in a fluid state.

  When the magnetic material imparts color, changes in the orientation of the magnetic material due to the effect of the magnetic field can lead to changes in the appearance of the composition.

  According to the invention, the solid cosmetic composition is in the form of a stick or cupel.

  The method according to the invention applies to existing solid cosmetic formulations. It does not contain any application other than the addition of magnetic pearlescent agents and thus retains the properties of the formulation.

  Lipsticks obtained via this method contain an adjustable color intensity.

  When the magnetic body is moved, the composition form may be affected thereby, for example, to create a three-dimensional effect.

  The magnetic field may be applied to form at least one pattern on the composition, the pattern being associated with, for example, the shape of the magnetic field lines.

  The composition thus makes it possible to create a new effect in a cosmetic composition, for example to create a three-dimensional pattern, or a three-dimensional impression or various other geometrical features. Or a non-geometric pattern is given.

  In the method according to the invention, the magnetic field may be applied until a defined appearance of the composition containing the magnetic material is obtained, ie until the composition stops changing even if the magnetic field remains.

  The magnetic material is mobile in the fluid composition. Their mobility and their speed of movement decrease when the composition becomes solid. They are fixed in place as the composition solidifies.

  Advantageously, the composition according to the invention has a melting point or thermal transition temperature above 25 ° C., in particular in the range from 25 to 110 ° C., in particular in the range from 30 to 60 ° C. and / or hardness. Is in the range of 0.001 to 0.5 MPa, particularly in the range of 0.005 to 0.4 MPa. Such melting point and hardness ranges have the advantage of better movement of the magnetic material and a clearer pattern on the composition on the stick or in the cupel.

  More advantageously, the composition according to the invention comprises lipsticks, lip balms, casting foundations, concealer products, products for “correcting” or “decorating” complexion and / or eye shadows, face powders, concentrated fragrances. In the form of a deodorant or antiperspirant.

  According to a first embodiment of the composition according to the invention, the composition comprises one or more regions rich in magnetic material and one or more regions depleted in magnetic material. In particular, these areas can be seen with the naked eye and can form somewhat more complex ornaments.

  Preferentially, the areas form several patterns that are separated from one another. The advantage of such a distribution of patterns is that the patterns can always be gradually refreshed as the composition is worn away.

  Even more preferentially, the pattern is repeated. Thus, the pattern can serve as an indicator of the degree of wear for the user, and the user can track the progress of his composition by detecting the total number of patterns before first use.

  Advantageously, the total concentration of the magnetic substance is between 0.2% and 10% by weight, preferably between 0.3% and 5% by weight, even more preferentially relative to the total weight of the composition. Is between 0.5% and 3% by weight. Within these concentration ranges, the magnetic material can move freely under the influence of a magnetic field and forms a well-defined pattern according to the form of the induced magnetic field.

  More advantageously, the concentration of the magnetic material in the region rich in magnetic material is between 5% and 10% by weight, preferably between 10% and 20% by weight, relative to the total weight of the composition. And even more preferentially between 15% and 25% by weight.

  Even more advantageously, the concentration of the magnetic material in the region depleted of the magnetic material is between 0.5% and 1% by weight, preferably between 0.02% and 0.5% by weight, relative to the total weight of the composition. And even more preferentially between 0.001% and 0.05% by weight.

  More advantageously, in this method, the cosmetic composition is cast at a temperature between 75 and 120 ° C, more preferentially between 85 and 110 ° C.

  The invention also relates to a solid composition obtainable via the above method according to the invention.

Solid composition A cosmetic composition can be “solid” according to the invention from the moment it has a melting point or a thermal transition temperature such as a softening point above 25 ° C., in particular 25-85 ° C., or even more It may be in the range of 30 to 60 ° C., specifically 30 to 45 ° C. and / or the hardness may be in the range of 0.001 to 0.5 MPa, particularly 0.005 to 0.4 MPa.

  The hardness of the composition is the name TA-XT2i (named TA-XT2i by the company Rheo, equipped with a cylindrical spindle made of stainless steel with a diameter of 2 mm and moving at a measuring speed of 0.1 mm / s to penetrate the composition at a penetration depth of 0.3 mm. It may be determined by measuring the compression force measured at 20 ° C. using a texturometer sold under the registered trademark. The hardness value is the maximum compressive force measured by the surface area of the texturometer cylinder in contact with the composition. In the specific case of a lipstick, the hardness may also be measured via the cheese wire method, which involves cutting the lipstick wand to a diameter of 8.1 mm and the hardness at a speed of 100 mm / min. And measuring at 20 ° C. using a moving DFGHS2 tensile tester manufactured by Indelco-Chatillon. The measured hardness is expressed as the shear force (expressed in grams) required to cut the stick under these conditions.

  Products cast as sticks or with cupels according to the invention are in particular lipsticks or lip balms, casting foundations, concealer products, complexion “correctors” and / or “decoratives”, eye shadows, It may be selected from face powders, concentrated fragrances, deodorants, and antiperspirants.

Physiologically Acceptable Medium The term “physiologically acceptable medium” refers to a non-toxic medium that may be applied to human skin or lips. The physiologically acceptable medium is generally compatible with the nature of the support to which the composition is applied, and further with the manner in which the composition is intended to be adjusted.

Magnetic device The magnetic field is generated by a magnetic device. The device may comprise one or two permanent magnets or an electromagnet powered by at least one battery or accumulator, for example. In the latter case, the magnetic device may include a switch for selectively supplying electricity to the electromagnet.

  The magnetic device may be arranged to create a magnetic field whose orientation changes over time. When the magnetic device includes a magnet, the device may include a motor for rotating the magnet, for example. As a variant, the magnetic device may comprise several solenoids arranged to generate a rotating magnetic field when electricity is supplied sequentially.

  The rotating magnetic field may, for example, make it possible to obtain a pattern with rotational symmetry, for example a pattern that gives the impression of a three-dimensional sphere.

  The electromagnet may be powered permanently or intermittently at the user's choice. In particular, the magnetic device may be arranged such that the electromagnet is not powered unless the magnetic device is correctly placed in close proximity to the support coated with the first composition.

  The magnetic field is, for example, at least 50 mT, or even at least 66 mT, better still at least 0.2 mT, or even at least 1 T (10000 gauss) or 1.4 T (14,000 gauss).

  In order to facilitate the application of a magnetic field, the magnetic device may comprise a member for positioning it with respect to a mold into which the composition is cast. This makes it possible, for example, to prevent the magnetic device from accidentally coming into contact with the composition and / or to concentrate the pattern produced on the area.

  The magnetic field can also be applied by means of a particularly flexible magnetic structure, including alternating N and S poles. Such a structure makes it possible, for example, to produce a repetitive pattern, for example a stripe, on the composition.

Magnetic Material The term “magnetic material” is not to be understood in a limiting sense and encompasses any form of particles, fibers, or aggregates of particles and / or fibers, where the magnetic susceptibility is not zero.

  The applied composition may comprise magnetic fibers or other aspherical bodies, such as particles or fiber chains.

  It is preferable that the magnetic body does not have residual magnetism in the absence of a magnetic field.

The magnetic material may include any magnetic material that is sensitive to the magnetic field lines, whether the magnetic field is generated by a permanent magnet or derived, such as neodymium, boron, Nickel, cobalt, iron, alloys and oxides thereof, in particular Fe ₃ O ₄ , furthermore gadolinium, terbium, dysprosium or erbium, and alloys and oxides thereof. The magnetic material may be a “soft” type or a “hard” type. The magnetic material can in particular be soft iron.

The magnetic body may or may not be a multilayer structure, and is at least one layer of magnetic material, such as iron, nickel or cobalt, and their alloys and oxides, in particular Fe ₃ O ₄ Including at least one layer.

  The magnetic body is preferably an aspherical surface and has, for example, an elongated shape. Therefore, when these magnetic bodies are subjected to a magnetic field, they will be aligned with their longitudinal axes in the orientation of the magnetic field lines, and undergo a change in orientation, which results in a change in the appearance of the composition. Reflected.

  Where the magnetic bodies are substantially spherical particles, they are preferably non-uniform in appearance so that changes in orientation induce changes in appearance.

  Whatever the shape of the magnetic bodies, for example, between 1 nm and 10 mm, better between 10 nm and 5 mm, and even better between 100 nm and 1 mm, for example from 0.5 μm. Between 300 μm or between 1 μm and 150 μm. This size is the dimension given by the statistical distribution of the semi-population and is referred to as D50.

  When the magnetic body is a particle that is not an elongated shape or is an elongated shape particle having a relatively small aspect ratio, the particle size is, for example, less than 1 mm.

  The magnetic body is, for example, a magnetic pigment.

Magnetic pigments The most particularly suitable pigments to use are pearlescent agents containing iron oxide Fe ₃ 0 ₄ . Pigments with magnetic properties are, for example, the trademarks 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 from Merck. Sold under the Silver (17289) and Colorona Patina Gold (117288) or trademarks from Engelhard, Flamenco Twilight Red, Flamenco Twilight Green, Flamenco Twilight Gold, Flamenco Twilight Blue, Timica Nu Antique Silver 110 AB, Timica Nu Antique Gold 212 GB, Timica Nu-Antique Copper 340 AB, Timica Nu Antique Bronze 240 AB, Cloisonne Nu Antique Green 828 CB, Cloisonne Nu Antique Blue 626 CB, Gemtone Moonstone G 004, Cloisonne Nu Antique Red 424 CB, Chroma-Lite Black (4498 ), Cloisonne Nu Antique Rouge Flambe (code 440 XB), Cloisonne Nu Antique Bronze (240 XB), Cloisonne Nu Antique Gold (222 CB) and Cloisonne Nu Antique Copper (340 XB).

  Another example of a magnetic pigment that can be included in the formulation of the composition is black iron oxide particles such as those sold under the name Sicovit Black E172 by the company BASF.

  Magnetic pigments also include ferrous metals, in particular passivated soft iron obtained from iron carbonyls, for example by the method described in US Pat. No. 6,658,931. These particles may include an oxide surface layer.

  Particles based on soft iron are in particular sold by the company Eckart under the name Stapa® WM Iron VP 041040.

The term “fiber” refers to a generally elongated object having an aspect ratio in the range of, for example, 3.5-2500, or 5-500, such as 5-150. The aspect ratio is defined as the ratio L / D, 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 fiber may be inscribed in a circle having a diameter in the range of 2 nm to 500 μm, for example 100 nm to 100 μm, or even 1 μm to 50 μm.

  The fibers may have a length in the range of, for example, 1 μm to 10 nm, such as 0.1 mm to 5 mm, or even 0.3 mm to 3.5 mm.

  The fibers may have a mass in the range of, for example, 0.15 to 30 denier (gram mass per 9 kg of yarn), for example, 0.18 to 18 denier.

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

  The composition may comprise solid or hollow fibers, which are independent or bonded together, eg knitted.

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

  The fibers may not have a form that is substantially modified when introduced into the composition, e.g., initially linear and sufficiently rigid to retain that form. May be. As a variant, the fibers may have a flexibility that allows them to be substantially deformed within the composition.

The fibers are based in particular on iron, zinc, nickel, cobalt or manganese, and their alloys and oxides, in particular Fe ₃ O ₄ , rare earth metals, barium sulfate, iron-silicon alloys, molybdenum CU ₂ MnAl, MnBi or The mixture may optionally contain a magnetic material selected from soft magnetic materials, hard magnetic materials with a non-zero content (which may be 100% or less).

  Where the composition comprises fibers containing magnetic particles, these particles may be present, for example, at least on the fiber surface, or even only on the fiber surface, only on the inside of the fiber, or on the inside of the fiber. It may be dispersed substantially homogeneously.

  The fiber may also include, for example, a non-magnetic core having a plurality of magnetic particles on its surface.

  The fibers may also include a synthetic matrix containing a plurality of dispersed magnetic grains.

  Where appropriate, the synthetic material doped with magnetic particles may itself be coated with a non-magnetic shell. Such a shell may, for example, form a barrier and / or introduce a color to separate the magnetic material from the surrounding medium. The fiber may include a monolithic magnetic core and may be coated with a non-magnetic shell, or vice versa.

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

  The fibers may be polyamide, PET, acetate, polyolefin, especially PE or PP, PVC, polyester block amide, plasticized Rilsan®, elastomer, especially polyester elastomer, PE elastomer, silicone elastomer or nitrile elastomer, or their This enumeration is not limited, and may include synthetic materials selected from a mixture of materials.

  The composition may contain a composite fiber comprising a magnetic core at least partially coated with at least one synthetic or natural non-magnetic material. The coating of the magnetic core may be performed, for example, by coextruding a shell made from a non-magnetic material around the core.

  The core may be coated by other means, such as in situ polymerization.

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

  The composition may also contain a composite fiber obtained by coating a natural or synthetic non-magnetic core with a synthetic material doped with magnetic particles, for example wood fibers, rayon fibers, Polyamide fiber, vegetable fiber, polyolefin fiber, in particular polyethylene fiber, Nylon® fiber, polyimide amide fiber or aramid fiber, this list is not limited.

  The composition may also include composite magnetic particles, particularly magnetic latex.

Composite Magnetic Particles Composite magnetic particles are composite particles composed of an organic or inorganic matrix and magnetic particles. Thus, the composite magnetic particles may include magnetic material grains on their surfaces and / or within them. The composite particles may consist of a magnetic core coated with an organic or inorganic matrix, or vice versa.

  The composite magnetic particle includes, for example, one of the magnetic materials listed above.

  The size of the composite magnetic particles is, for example, between 1 nm and 1 mm, better between 100 nm and 500 μm, and even better between 500 nm and 100 μm. The term “size” refers to the dimension given by the statistical particle size distribution of the semi-population and is referred to as D50.

  The paper by C. Goubault, March 23, 2004, incorporated herein by reference, recalls the latest technology related to composite magnetic particles in Chapter 1 and uses it to prepare composite magnetic particles. A list of possible preparation methods is created, ie the separate synthesis of magnetic grains and matrix, the synthesis of magnetic grains in contact with the matrix, or the synthesis of the matrix in the presence of magnetic grains.

  Kisker sells composite magnetic particles composed of silica with an inorganic matrix. Dynal, Seradyn, Estapor and Ademtech present composite magnetic particles with an organic matrix, which may also be used in the present invention.

  More specifically, Estapor sells two magnetic latices with the reference name M1-070 / 60, consisting of ferrite grains uniformly distributed in a polystyrene matrix, which contains 65% iron oxide. The average diameter of polystyrene particles is 890 nm, and the mass content of solids is 10%.

The ferrofluid composition may comprise a ferrofluid, ie a stable colloidal suspension of magnetic particles, in particular magnetic nanoparticles.

  For example, particles with a size on the order of tens of nanometers are dispersed in a solvent (water, oil or organic solvent) by means of surfactants or dispersants or via electrostatic interactions.

  Ferrofluids are, for example, by grinding ferrite or other magnetic particles until nanoparticles are obtained and then dispersing in a fluid containing a surfactant that is adsorbed onto the particles to stabilize the particles, or Prepare by precipitation of a solution of metal ions in a basic medium.

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

  Under the action of a magnetic field, the magnetic moments of the particles are aligned along the lines of magnetic force, giving the appearance that the magnetic susceptibility is not zero in the liquid. When the magnetic field is extinguished, there is no hysteresis and the magnetization disappears.

  Beyond the magnetic field threshold, macroscopic changes such as the appearance of peaks or changes in rheological properties may also be brought about in the liquid.

  The term “ferrofluid” also encompasses emulsions of droplets of ferrofluid in a solvent. In that case, each droplet contains colloidal magnetic particles in a stable suspension. This imparts a ferrofluid in any type of solvent. The size of the magnetic particles in suspension in ferrofluid is for example between 1 nm and 10 μm, better between 1 nm and 1 μm, and even better between 1 nm and 100 nm. The term “size” refers to the dimension given by the statistical particle size distribution of the semi-population and is referred to as D50.

Of particular mention are the ferrofluids sold by Liquids Research Ltd under the following reference names:
WHKS1S9 (A, B or C), which is a water-based ferrofluid containing magnetite (Fe ₃ O ₄ ) containing particles with a diameter of 10 nm;
WHJS1 (A, B or C), which is a ferrofluid based on isoparaffin and magnetite (Fe ₃ O ₄ ) particles (diameter 10 nm);
BSK25_dextran, a dextran-stabilized water-based ferrofluid containing 9 nm diameter magnetite (Fe ₃ O ₄ ) particles.

Magnetic particle and / or fiber chain The composition may comprise aggregates of particles or fibers, the maximum dimension of which, for example, the length is, for example, between 1 nm and 10 mm, such as between 10 nm and 5 mm, or from 100 nm. Between 1 mm or otherwise between 0.5 μm and 3.5 mm, for example between 1 μm and 150 μm. Size refers to the dimension designated D50, given 1/2 of the half population by statistical distribution.

  Magnetic particle chains may be obtained, for example, by assembling colloidal magnetic particles, publications, Permanently linked monodisperse paramagnetic chains, EM Furst, C. Suzuki, M. Fermigier, AP Gast, Langmuir, Vol. 14, 7334-7336 (1998), Suspensions de particules magnetiques, M. Fermigier, Y. Grasselli, Bulletin de la SFP (105), July 1996, and Flexible magnetic filaments as micromechanical sensors, C. Goubault, P. Jop M. Fermigier, J. Baudry, E. Bertrand, J. Bibette, Phys. Rev. Lett., 91, 26, 260802-1 to 260802-4 (2003).

  These papers seek to obtain chains of magnetic latex particles that contain iron oxide particles and a functionalized polystyrene matrix that are permanently linked after a chemical reaction, especially covalent bonding between the surfaces of adjacent particles. And a method for obtaining a chain of droplets of a ferrofluid emulsion coupled together through physical property interactions is also described. The length and diameter of the permanent chain thus obtained can be adjusted. Such magnetic chains constitute anisotropic magnetic objects that can be oriented and moved under the influence of a magnetic field.

  The size of the magnetic chain can satisfy the same conditions as the magnetic fiber.

  The composition containing a magnetic material may contain at least one magnetic or nonmagnetic pearlescent agent.

Other Components Typically, a composition containing a magnetic material includes a physiologically acceptable medium. The term “physiologically acceptable medium” refers to a non-toxic medium that may be applied to human skin, skin or lips. The physiologically acceptable medium is generally adapted to the nature of the support to which the composition is applied, and further to the form in which the composition is adjusted.

  The composition may comprise components other than those described above, in particular at least one solvent, fatty phase, film-forming polymer and / or dermatological or cosmetic active agent, especially depending on the dosage form.

Solvent The composition containing the magnetic material may comprise at least one aqueous or organic solvent, in particular a volatile organic solvent.

  The first composition may advantageously comprise a volatile solvent, in particular a volatile organic solvent.

In the context of the present invention, the term “volatile solvent” is a solvent that is liquid at room temperature and in particular has a non-zero vapor pressure at room temperature and atmospheric pressure, in particular, a vapor pressure of 0.13 Pa to 40000 Pa (10 ^{−3 to} 300 mmHg). ), Preferably in the range of 1.3 Pa to 13000 Pa (0.01 to 100 mmHg), and preferentially means a solvent in the range of 1.3 Pa to 1300 Pa (0.01 to 10 mmHg).

  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, especially the amount of organic solvent, depends on the nature of the support on which the composition is intended to be applied.

  The first composition may include at least one volatile solvent comprising a volatile oil.

  The oil may be a silicone oil or a hydrocarbon-based oil, or may contain a mixture of such oils.

  In the context of the present invention, the term “silicone oil” means an oil comprising at least one silicon atom, in particular at least one Si—O group.

  The term “hydrocarbon-based oil” means an oil mainly containing hydrogen and carbon atoms and possibly oxygen, nitrogen, sulfur and / or phosphorus atoms.

Volatile hydrocarbon oils are hydrocarbon oils containing 8 to 16 carbon atoms, particularly branched C _{8 to} C ₁₆ alkanes (also known as isoparaffins), such as isododecane (2,2,4 , 4,6-pentamethylheptane), isodecane, isohexadecane, and oils sold, for example, under the trademarks Isopar® or Permethyl®.

Further volatile oils that may be used include volatile silicones, such as volatile linear or cyclic silicone oils, especially those having a viscosity ≦ 8 centistokes (8 × 10 ⁻⁶ m ² / s), in particular 2 Mention may be made of those containing ˜10 silicon atoms, in particular 2 to 7 silicon atoms, these silicones optionally comprising alkyl or alkoxy groups containing 1 to 10 carbon atoms. Among the volatile silicone oils that may be used in the present invention, mention may be made in particular of dimethicone having a viscosity of 5 and 6 cSt, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyl. Trisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane and dodecamethylpentasiloxane, and mixtures thereof.

  Further mention may be made of the general formula (I):

(Wherein R represents an alkyl group containing one or more hydrogen atoms which can be replaced by 2 to 4 carbon atoms, fluorine atoms or chlorine atoms)
Volatile linear alkyltrisiloxane oil.

Mention may be made, among the oils of the general formula (1), of the oils of the formula (I) in which R is a butyl group, a propyl group or an ethyl group,
3-butyl-1,1,1,3,5,5,5-heptamethyltrisiloxane,
3-propyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, and
3-ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane.

  Volatile fluoro oils such as nonafluoromethoxybutane or perfluoro-methyl-cyclopentane, and mixtures thereof may also be used.

  The composition according to the invention may comprise a volatile oil, for example between 0.01% and 95% by weight, better still between 1% and 75% by weight relative to the total weight of the composition. .

The composition may comprise at least one organic solvent selected from the following list:
Ketones that are liquid at room temperature, such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone or acetone;
-Alcohols that are liquid at room temperature, such as ethanol, isopropanol, diacetone alcohol, 2-butoxy-ethanol 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 room temperature, such as propylene glycol monoethyl ether, propylene glycol acetate monoethyl ether or dipropylene glycol n-butyl ether;
-In particular short-chain esters containing a total of 3 to 8 carbon atoms, such as ethyl acetate, methyl acetate, propyl acetate, n-butyl acetate or isopentyl acetate;
Alkanes that are liquid at room temperature, such as decane, heptane, dodecane and cyclohexane.

The composition also contains water or water and hydrophilic organic solvents commonly used in cosmetics (e.g. alcohols, in particular linear or branched lower monoalcohols having 2 to 5 carbon atoms, e.g. ethanol, isopropanol). Or mixtures with n-propanol, polyols such as glycerol, diglycerol, propylene glycol, sorbitol or pentylene glycol, and polyethylene glycol). The first compositions may also contain hydrophilic C ₂ ethers and / or C ₂ -C ₄ aldehydes may also contain. Water or a mixture of water and a hydrophilic organic solvent is, for example, 0% to 90% by weight, in particular 0.1% by weight, based on the total weight of the composition in the first and / or second composition. To 90% by weight, preferably 0% to 60% by weight, in particular 0.1% to 60% by weight.

Fatty phase composition is, for example when intended for application to the lips or eyelashes, a fatty phase, in particular at least one fatty phase that is liquid at room temperature (25 ° C.) and atmospheric pressure (760 mmHg), and / or Or it may include fatty substances that are solid at room temperature, such as waxes, pasty fatty substances and gums, and mixtures thereof. The fatty phase may also contain a lipophilic organic solvent.

  The composition may for example comprise a continuous fatty phase, which may contain less than 5% water and in particular less than 1% water, in particular in anhydrous form, relative to its total mass. It may be.

Fatty substances that are often referred to as “oils” and that are liquid at ambient temperature can be mentioned as hydrocarbon-based vegetable oils, such as heptanoic acid or octanoic acid triglycerides, having 4 to 10 carbon atoms. Fatty acid liquid triglycerides, or sunflower oil, corn oil, soybean oil, grape seed oil, sesame seed oil, apricot oil, macadamia oil, castor oil, avocado oil, caprylic / capric triglyceride, jojoba oil, Shea butter oil, lanolin oil or acetylated lanolin oil; linear or branched hydrocarbons of mineral or synthetic origin, such as liquid paraffin and its derivatives, petrolatum, polydecene or hydrogenated polyisobutene, such as Parleam; especially the synthesis of fatty acids Esters and ethers such as perserine oil, isopropyl myristate, 2-ethyl palmitate Ruhexyl, 2-octyldodecyl stearate, 2-octyldodecyl erucate or isostearyl isostearate; hydroxylated esters such as isostearyl lactate, octyl hydroxystearate, octyldodecyl hydroxystearate, diisostearyl malate, triisocetyl citrate And heptanoic acid, octanoic acid or decanoic fatty acid; isononyl isononanoate, isopropyl lanolinate, tridecyl trimellitate or diisostearyl malate; polyol esters such as propylene glycol dioctanoate, neopentyl glycol diheptanoate, diethylene glycol diisononanoate; And pentaerythritol esters; fatty alcohols containing 12 to 26 carbon atoms, such as octyldodecanol, 2-butyl Luoctanol, 2-hexyldecanol, 2-undecylpentadecanol or oleyl alcohol; partially hydrocarbon-based and / or silicone-based fluoro oil, liquid or paste at room temperature, volatile or non-volatile, Silicone oil such as linear or cyclic polydimethylsiloxane (PDMS), for example, cyclomethicone, dimethicone, such as phenyltrimethicone, phenyltrimethylsiloxydiphenylsiloxane, diphenylmethyldimethyltrisiloxane, diphenyldimethicone, optionally containing phenyl groups, Phenyldimethicone and polymethylphenylsiloxane; and mixtures thereof. Oil is 0.01% to 90% by weight, and better still, based on the total weight of the composition
It may be present in a content ranging from 0.1% to 85% by weight.

  The presence of the oil phase can give a gloss, for example, resulting in a refractive index between 1.47 and 1.51, and better between 1.48 and 1.50. The refractive index is measured at room temperature (25 ° C.) using a refractometer.

  The composition may comprise at least one agent for constituting a liquid fatty phase (formed by the volatile or non-volatile oils and / or organic solvents described above), which are waxes, semi-crystalline Selected from hydrophilic polymers and lipophilic gelling agents, and mixtures thereof.

  Pasty fatty substances generally have a melting point between 25 and 60 ° C., preferably between 30 and 45 ° C. and / or a hardness between 0.001 and 0.5 MPa, preferably between 0.005 and 0.4 MPa. Hydrocarbon compounds, such as lanolin and their derivatives.

  The wax may be solid at room temperature (25 ° C.), with a reversible solid / liquid state change, melting point above 30 ° C., which may be up to 200 ° C., hardness 0.5 It is over MPa and may have an anisotropic crystal structure in the solid state. Specifically, the wax may have a melting point above 25 ° C, and better still above 45 ° C. The wax may be a hydrocarbon-based wax, a fluoro wax and / or a silicone wax, and may be of plant, mineral, animal and / or synthetic origin. Among the waxes that may be used are beeswax, carnauba wax or candelilla wax, paraffin, microcrystalline wax, ceresin or ozokerite; synthetic waxes such as polyethylene wax or Fischer-Tropsch wax, 16-45 These are silicone waxes such as alkyl or alkoxy dimethicones containing the following carbon atoms. The composition may contain 0 to 50% by weight, or even 1% to 30% by weight of wax, based on the total weight of the composition.

  The gums that may be used are generally high molecular weight polydimethylsiloxane (PDMS), or cellulose gums or polysaccharides.

Film-forming polymer The composition may comprise, for example, a film-forming polymer, in particular in the case of mascara, nail enamel or foundation. The term “film-forming polymer” refers to a polymer capable of forming a continuous thin film that adheres to a support, in particular to keratin materials, by itself or in the presence of a film-forming aid.

  Among the film-forming polymers that may be used in the composition according to the invention, mention may be made in particular of naturally occurring polymers such as free radical type or polycondensation type synthetic polymers, nitrocellulose or cellulose esters. , And mixtures thereof.

  The free radical type film-forming polymer can in particular be a vinyl polymer or copolymer, in particular an acrylic polymer.

  Vinyl film-forming polymers can be obtained from the polymerization of ethylenically unsaturated monomers containing at least one acid group and / or esters of these acidic monomers and / or amides of these acidic monomers, for example acrylic acid, Α, β-ethylenically unsaturated carboxylic acids such as methacrylic acid, crotonic acid, maleic acid or itaconic acid.

  The vinyl film-forming polymer also includes monomers selected from vinyl esters such as vinyl acetate, vinyl neododecanoate, vinyl pivalate, vinyl benzoate and vinyl t-butylbenzoate, and styrene monomers such as styrene and α-methylstyrene. It can also be obtained from homopolymerization or copolymerization.

  Film-forming polycondensates that may be mentioned are polyesters, polyester-amides, polyamides and polyureas, and this list is not limited.

  Naturally modified polymers that are optionally modified are shellac resins, sandalac gums, dammar resins, elemi gums, copal resins, cellulosic polymers such as nitro selected from cellulose acetate, cellulose acetobutyrate and cellulose acetopropionate, for example. It may be selected from cellulose, ethylcellulose or nitrocellulose esters, and mixtures thereof.

  The film-forming polymer may be in the form of solid particles in an aqueous or oily dispersion commonly 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 known as polymer NADs (non-aqueous dispersions) as opposed to latexes, which are dispersions of aqueous polymers. These dispersions may be in the form of polymer nanoparticles in a stable dispersion, especially in the fatty phase. The nanoparticles are preferably 5 to 600 nm in size. Techniques for preparing these dispersions are well known to those skilled in the art.

  Available film-forming polymer aqueous dispersions include the names Neocryl XK-90®, Neocryl A-1070®, Neocryl A-1090®, Neocryl sold by Avecia-Neoresins. BT-62 (registered trademark), Neocryl A-1079 (registered trademark), Neocryl A-523 (registered trademark), the name Dow Latex 432 (registered trademark) sold by Dow Chemical, and Daito Kasei Kogyo Co., Ltd. Acrylic dispersion of the name Daitosol 5000 AD (registered trademark) sold by; or else the names Neorez R-981 (registered trademark), Neorez R-974 (registered trademark) sold by the company Avecia-Neoresins and The names Avalure UR-405 (registered trademark), Avalure UR-410 (registered trademark), Avalure UR-425 (registered trademark), Avalure UR-450 (registered trademark), Sancure 875 (registered trademark) sold by Goodrich, Inc. ), Sancure 861 (registered trademark), Sancure 878 (registered trademark), Sancure 2060 (registered trademark) and the name Impranil 85 (registered trademark) sold by Bayer, and Hydro Aqueous polyurethane dispersions under the name Aquamere H-1511® marketed by the company omer; sulfopolyesters sold under the brand name Eastman AQ by the company Eastman Chemical Products.

Film-forming block polymer According to one embodiment of the invention, the composition comprises at least one film-forming polymer that is a film-forming linear ethylenic block polymer. The polymer preferably includes at least a first block and at least a second block having different glass transition temperatures (Tg), wherein the first and second blocks are at least one constituent monomer of the first block. And linked together via an intermediate block comprising at least one constituent monomer of the second block.

  Advantageously, the first and second blocks of the block polymer are incompatible with each other.

  Such polymers are described, for example, in the documents of EP 1411069 or WO 04/028488, which are incorporated by reference.

  The composition containing a magnetic material may contain at least one magnetic or nonmagnetic filler.

Filler The term “filler” refers to any form of particle that is insoluble in the medium of the composition, regardless of the temperature at which the composition is produced. Fillers can particularly help to change the rheology or texture of the composition. The nature and amount of the particles can vary depending on the desired mechanical properties and texture.

  Examples of fillers that may be mentioned include, among others, talc, mica, silica, kaolin, sericite, polyamide powder, polyolefin powder, such as polyethylene powder, polytetrafluoroethylene powder, polymethyl methacrylate powder or polyurethane powder, starch powder and Examples include silicone resin beads.

  Fillers can be intended to create a soft focus effect, in particular in the case of foundations, so as to hide skin imperfections.

  The composition containing a magnetic substance may also contain a film-forming aid that promotes the formation of a thin film with a film-forming polymer.

Active agent The composition may comprise at least one cosmetic or dermatological active agent. Among the cosmetic, dermatological, hygienic or pharmaceutically active agents that may be used in the compositions of the present invention are humectants (polyols such as glycerol), vitamins (C, A , E, F, B or PP), essential fatty acids, essential oils, ceramides, sphingolipids, sunscreens that are fat-soluble or in the form of nanoparticles, and certain skin treatment actives (protective agents, antibacterial agents, anti-wrinkles) Agents) and self-tanning agents. These active agents may be used, for example, at a concentration of 0 to 20%, in particular at a concentration of 0.001% to 15%, relative to the total mass of the composition.

  The composition also includes ingredients commonly used in cosmetics, such as thickeners, surfactants, trace elements, humectants, softeners, sequestering agents, perfumes, acidifying or basifying agents, preservatives. , Antioxidants, UV-screening agents and dyes, or mixtures thereof.

  Depending on the type of application intended, the composition according to the invention may comprise ingredients conventionally used in the subject field, which are present in an amount suitable for the intended dosage form.

  Of course, those skilled in the art will recognize that any of these additional compounds and / or their amounts so that the advantageous properties of the compositions according to the invention are not adversely affected at all or substantially by the envisaged addition. Choose carefully.

  The following composition examples are given as non-limiting illustrations.

  The assembly can be understood more clearly on reading the following detailed description of non-limiting examples of their use and on examining the accompanying drawings.

1 is a schematic illustration of an embodiment of a magnetic device before switching on to produce a composition according to the invention. FIG. 2 is a schematic axial fragmentary sectional view of the magnetic device of FIG. 1 in which a composition according to the invention has been produced after operation. FIG. 2 is a schematic axial fragmentary sectional view of the magnetic device of FIG. 1 in which a composition according to the invention has been produced after operation. FIG. 2 is a schematic axial fragmentary sectional view of the magnetic device of FIG. 1 in which a composition according to the invention has been produced after operation. FIG. 2 is a schematic axial fragmentary sectional view of the magnetic device of FIG. 1 in which a composition according to the invention has been produced after operation. 1 is a cross-sectional view of one type of composition according to the present invention. 1 is a cross-sectional view of one type of composition according to the present invention. 1 is a cross-sectional view of one type of composition according to the present invention. 1 is a cross-sectional view of one type of composition according to the present invention. 1 is a cross-sectional view of one type of composition according to the present invention. 1 is a cross-sectional view of one type of composition according to the present invention. 1 is a cross-sectional view of one type of composition according to the present invention. 1 is a cross-sectional view of one type of composition according to the present invention. 1 is a longitudinal section of one type of composition according to the invention. 1 is a longitudinal section of one type of composition according to the invention. 1 is a longitudinal section of one type of composition according to the invention. 1 is a longitudinal section of one type of composition according to the invention. 1 is a longitudinal section of one type of composition according to the invention. 1 is a longitudinal section of one type of composition according to the invention. FIG. 5 shows another adjustment of the composition according to the invention.

Lipsticks, antiperspirants and deodorant sticks according to the invention are prepared. Use the following commercially available compositions:
LANCOME ROUGE ABSOLU as a lipstick
STICK INVISIBLE GARNIER MINERAL HOMME as an antiperspirant
MENNEN STICK LARGE CONTROL H24 GREEN as a deodorant stick.

  These commercially available compositions are brought to temperatures in the range of 75-120 ° C. 1% by weight of magnetic pearlescent agent is added relative to the total weight of the composition. Each composition 30 is cast in a stick mold or cupel while in the hot and fluid state.

  FIG. 1 shows a composition 30 comprising a magnetic body 1 cast in a cylindrical stick mold 100. The longitudinal axis X passes through the cylinder 100.

  The magnetic body 1 is non-randomly distributed in the composition 30.

  Composition 30 is contained in hollow cylinder 100. This cylinder has one end closed by a base 101 and an opposite end 102 open. This cylinder is made of silicone. It may also be made from other materials such as cosmetic conditioning products or those composed of various casting molds: polypropylene, polyethylene, PVC, aluminum and the like.

  The mold 100 is placed in the center of the magnetic device 10 so that a magnetic field useful for altering the appearance of the composition 30 can be generated without contacting the magnetic device 10.

  In the embodiment considered, the magnetic device 10 comprises a permanent magnet 12 supported by a holding member 13 whose longitudinal axis is parallel to the axis X and whose polar axis is substantially perpendicular to the axis X. Is provided.

  In the embodiment considered, the magnetic device 10 is covered so that it is arranged to generate a rotating magnetic field and is housed in a case 15 to drive the holding member 13 about the axis X. Equipped with a motor.

  A switch 16 is present on the case 15 so that the user can switch on the motor and rotate the holding member 13 with the magnet 12.

  The strength of the magnet 12 is advantageously between 0.2 and 1.4T.

  Magnets 12 are preferably placed a distance between 0.01 and 3 mm from composition 30.

  More preferentially, a magnetic field is created in the device over a period of between 1 and 30 seconds.

  In a variant embodiment not shown, the rotating magnetic field is generated by a plurality of solenoids that are continuously fed so that a rotating magnetic field is generated.

  When the device is on, the magnetic particles 1 contained in the composition 30 are aligned in line along the magnetic field lines of the magnet 12 and change their orientation, leading to a change in the appearance of the composition 30.

  The user can select parameters for applying a magnetic field depending on the outcome he desires to obtain.

  The resulting pattern may be continuous, for example as in FIG. 2, where the particles 1 are grouped together on the outer surface of the stick. The pattern forms a hollow cylinder that encloses the core depleted of magnetic material.

  The resulting pattern may be discontinuous, for example, as in FIGS. 3-5, where the particles 1 are grouped together to form a repetitive pattern that is different from each other. .

  In this case, the magnetic device 10 is, for example, in the form of a structure filled with magnetized particles, creating alternating N and S poles, which are repetitive patterns, such as strips, lines or Allows formation of traces.

  Figures 6 to 13 show a cross section of a stick according to the invention. The resulting pattern can form an isolated region 5 that is distinct from the region 2 depleted of magnetic particles. These patterns 5 form, for example, stripes, circles, or zigzags.

  Furthermore, it may be assumed that a heart-shaped, square or circular cross section is formed, with or without protrusions. However, other patterns may be produced.

  14-19 show a longitudinal section through a stick according to the invention. The pattern 5 can be in the form of lines, zigzags, curves, parallelepipeds, decorative cords or strips in cross section. However, other patterns may be produced.

  Another apparatus for producing the composition of the present invention is shown in FIG. In this exemplary embodiment, the composition is cast in Cupel 100 forming a case. This case is composed of a base body 104 and a lid 103 bonded thereon.

  The substrate 104 includes a compartment containing a composition comprising a foundation in paste form in the illustrated embodiment.

  The base body 104 also includes a storage container 105 arranged so as to fit at least one magnet 12 therein.

  The magnet 12 may comprise, for example, an adhesive surface 25 or any other assembly means for securing the magnet 12 to the storage container 105. This magnet may be removed after manufacturing the composition of the present invention, depending on the pattern created in composition 30, or it may remain attached to substrate 104.

  The magnet 12 may of course be positioned on the lid 103 or on the side wall of the cupel 100.

  Similarly, instead of being located in the cupel, a magnet may be placed on the wall of the deodorant tube or on the wall of the lipstick.

1 Magnetic particles
2 Area depleted of magnetic particles
3 Grouped magnetic particles (pattern)
5 patterns
7 patterns
10 Magnetic equipment
12 magnets
13 Holding member
15 cases
16 switch
25 Adhesive surface
30 Composition
100 hollow cylinder mold (or cupel)
101 Base
102 Upper edge
103 lid
104 substrate
105 Storage container

Claims (12)

  Solid compositions in the form of products cast in particular as sticks or cupels, containing one or more magnetic bodies (1) having an outer surface and a non-zero magnetic susceptibility, these The magnetic body (1) is non-randomly oriented in at least a part of the outer surface in the solid composition, thereby forming one or more patterns (5) on the outer surface. , Solid composition.   Melting point or thermal transition temperature is above 25 ° C., in particular in the range from 30 to 60 ° C. and / or hardness in the range from 0.001 to 0.5 MPa, in particular in the range from 0.005 to 0.4 MPa The composition according to claim 1, wherein   Be in the form of lipsticks, lip balms, casting foundations, concealer products, products that “correct” or “make up” complexion and / or eye shadows, face powders, concentrates, deodorants or antiperspirants 3. The composition according to claim 1 or 2, characterized by.   The pattern (5) forms one or more regions (3) rich in magnetic material (1) disposed on one or more regions (2) depleted of magnetic material (1) The composition according to any one of claims 1 to 3, wherein the composition is characterized in that   5. Composition according to any one of claims 1 to 4, characterized in that the patterns (5) are separated from one another.   6. Composition according to claim 4 or 5, characterized in that the pattern (5) is identical and repeats.   The total concentration of the magnetic substance (1) is between 0.2% by weight and 10% by weight, preferably between 0.3% by weight and 5% by weight, and even more preferentially 0.5% by weight, relative to the total weight of the composition 7. Composition according to any one of claims 1 to 6, characterized in that it is between 3 and 3% by weight.   The concentration of the magnetic substance (1) in the region (3) is between 5% by mass and 10% by mass, preferably between 10% by mass and 20% by mass, even more preferentially, with respect to the total mass of the composition. The composition according to claim 4, wherein is between 15% and 25% by weight.   The concentration of the magnetic substance (1) in the region (2) is between 0.5% by weight and 1% by weight, preferably between 0.02% by weight and 0.5% by weight, even more preferentially, with respect to the total weight of the composition. 9. Composition according to any one of claims 4 to 8, characterized in that is between 0.001% and 0.05% by weight. A method for producing a solid cosmetic composition cast as a stick or with cupel, comprising:
-Preparing a fluid cosmetic composition comprising one or more magnetic bodies (1) whose susceptibility is not zero;
-Casting the cosmetic composition as a stick or cupel while hot;
-When the composition is a fluid, altering the orientation of the magnetic body (1) and / or at least partly exposing the magnetic body (1) by at least partially exposing the composition to a magnetic field (10) Moving the magnetic material (1) non-randomly in the solid composition.   11. A method according to claim 10, wherein one or more patterns (5) are formed on the outer surface of the stick or cupel by applying a magnetic field.   12. The method according to claim 10 or 11, wherein the cosmetic composition is cast at a temperature between 75 ° C and 120 ° C, more preferentially between 85 ° C and 110 ° C.

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