WO2010007596A1

WO2010007596A1 - A packaging and applicator assembly for applying a composition to the skin or the lips, and including a heating device

Info

Publication number: WO2010007596A1
Application number: PCT/IB2009/053117
Authority: WO
Inventors: Virginie Saget
Original assignee: L'oreal
Priority date: 2008-07-17
Filing date: 2009-07-17
Publication date: 2010-01-21
Also published as: FR2933853A1; FR2933853B1

Abstract

The embodiments of the present disclosure relate to an assembly for applying a non-powder cosmetic to the lips or to the skin. The assembly includes a supply of composition (P) and a heating device(20) that is not secured to the supply of composition or that is separable from the supply of composition for the application of the compositon onto the lips or the skin. The heating device incorporate an electrical power source and including a body (24) that is provided externally, at an axial end, with a heated surface(22a), the body defining an external lateral grip surface (24a) that is not heated.

Description

A PACKAGING AND APPLICATOR ASSEMBLY FOR APPLYING A COMPOSITION TO THE SKIN OR THE LIPS, AND INCLUDING A HEATING DEVICE

The present disclosure relates to applying a cosmetic to human keratinous materials, in particular to the skin or the lips.

Lipsticks have been packaged for a longtime as sticks for applying directly to the lips. Such formulations of lipstick should satisfy firstly mechanical requirements in order to enable sliding and strength of the stick during application, avoiding breakage, and secondly a transfer requirement to enable application that is comfortable, and that makes a deposit on the lips that is sufficient and of desirable quality. These elements are generally considered as antagonistic and lead to formulation constraints that it would be desirable to relax.

US application No. 2004/0096258 discloses a packaging and applicator device for applying a lipstick that includes a vibration generator and a heat generator. The vibration generator makes it possible to perform a massage action with a hot surface, independently of the application of the lipstick. The heat generator includes a resistor wire that extends along the inside surface of a metal cap. The metal cap is fitted from below onto a lipstick mechanism. In use, the mechanism serves as a grip surface. The resistor wire extends over practically the entire height of the cap, and the cap is thus heated in its entirety. European application No. EP 1 595 472 A2 discloses a shaping device for shaping the application surface of a composition contained in a body, the device including an electrical resistor.

Heat is generally considered harmful to the mechanical strength of a composition packaged as a stick, and US patent No. 4 393 975 has thus proposed a cooling device making it possible to protect the stick from heat. US 2008/0143214 Al describes packaging comprising a stick composition, e.g. a depilatory composition or a lipstick, housed in a container including a coil and a magnet that is suitable for moving relative to the coil so as to induce an electric current. The electric current may serve to heat the end of the stick by means of a heater element disposed around the closure cap of the device.

With such a device, the entire cap is heated and radiates towards the surface of the composition. The energy expenditure is relatively large, and it can turn out to be difficult to be in control of heating the composition, particularly since the cap must be in place on the container in order to receive the electrical power generated by the housing.

European application No. EP 0 834 266 discloses a hand held distributor for thermofusible material, such as wax, which distributor includes heating means, in contact with an applicator or being the applicator itself, through which said thermofusible material exits the reservoir and contacts the skin.

International application WO 00/47078 discloses a device including a rolling applicator and a base adapted to this applicator, which can heat said applicator to facilitate application of a composition such as, for example, a wax.

International application WO2006/090343 discloses a vibrating applicator for application or finishing touches of a makeup, the applicator being configured to fit in a makeup composition container or to contain a reservoir of said makeup composition.

There exists a need to improve the performance of a composition that is not powder (i.e. not pulverulent), in particular that is in the form of a solid mass, while ensuring the composition preserves mechanical properties compatible with packaging in stick form or in some other solid form. Exemplary embodiments of the present disclosure seek to satisfy this need.

Exemplary embodiments of the present disclosure provide an assembly (that may also be called a system) for applying a cosmetic composition to human keratinous materials, for example to the lips or to the skin, the assembly comprising:

^• a supply of said composition; and

^• a heating device that is not secured to the supply of composition or that is separable from the supply of composition, said heating device incorporating an electrical power source and including a body that is provided externally, at an axial end, with a heating surface, the body defining an external lateral grip surface that is not heated.

The term "not heated" as used therein should be understood to mean that after 5 minutes (min) of operation of the device in an environment at 25°C, the temperature varies by less than 10⁰C, better less than 5°C, still better less than 1°C. The term "cold" as used therein should be understood to mean at or below an ambient room temperature of 20⁰C.

The heated surface may be visible while the heating device is being used to heat the composition. The heated surface is advantageously formed on a heater endpiece that preferably has an outline that is set off from said body. The fact that the heater endpiece has an outline that is visually set off, enables the user easily to distinguish the surface that is hot from the surface that is not hot, and thus bring the composition into contact with the heating device at the right location.

The composition may be solid particularly when cold. The term "solid" should be understood to mean that the composition does not flow under the action of gravity at 20⁰C. The composition need not be in powder form. The composition may be given a predefined shape during manufacturing of the assembly.

The heated surface may extend axially over less than half the height of the heating device, thereby making it possible to benefit from a relatively large grip surface that is not heated, making it possible to place the thumb and the index finger comfortably thereon, for example. The heated surface may be metal and the non-heated grip surface may be non-metal . The fact that the supply of composition is removable, i.e. separable, from the heating device or is not secured thereto, enables the user to bring the composition into contact with, or into the proximity of, the heated surface, and then use the composition that has become deposited on the heated surface for application purposes, or else use a layer of the supply of composition that has softened while in contact with, or in the proximity of, the heated surface for application purposes . The composition may be a composition for application to the lips, in particular a lipstick, a lip gloss, or a lip balm.

The composition may contain at least one pigment or colorant . The temperature of the heated surface may be greater than or equal to 35°C, in some embodiments lying in the range 40⁰C to 65°C.

The heating device may include an external zone at a temperature that is greater than or equal to 35°C, e.g. lying in the range 40⁰C to 65°C, over less than half of its length, e.g. less than one third, or even less than one fourth, of its length, or even over only an end face. By way of example, the heated surface may be defined by a relatively thin wall, below which a heater element extends, e.g. at a distance therefrom that is less than or equal to 3 millimeters (mm) , better less than or equal to 2 mm or 1 mm, or even 0.5 mm, or even 0 mm (i.e., in contact with the heater element) .

By way of example, embodiments of the present disclosure make it possible to obtain novel sensations in application; improved sliding of the composition over the skin and/or the lips; a heavier deposit; a color that is more intense and/or more glossy.

Embodiments of the present disclosure also offer novel formulation and/or packaging possibilities. Raising the temperature of the composition on application enables the composition to be formulated using components that would lead to insufficient transfer when applied cold, for example.

The invention makes it possible to use the heating device to soften the surface of the composition, for example when said composition is packaged as a stick, before applying the end that has been softened at its surface to the skin or the lips. Softening may optionally go as far as melting the composition locally. Applying heat to the outside surface of the composition in order to heat said surface leads to a local rise in its temperature of at least 5°C, for example. When the composition is in stick form, a portion of said stick remains solid during application. The heating device makes it possible to obtain improved results, e.g. in terms of glossiness, than the results that are obtained without heating.

Where appropriate, the heating surface of the assembly of embodiments of the present disclosure may also be used to apply composition, e.g. by bringing the heated surface into contact with the composition so as to load it with composition, then by applying the heated surface over the skin or the lips being made up or being treated. The composition may then be packaged as a stick or in some other way, e.g. in a dish or in the form of a pellet. When the heated surface is used to apply the composition, it may optionally be heated during application in the same way as when it is being used to take the composition. Where appropriate, the heating device makes it possible to operate in a first heating mode while taking the composition, and to operate in a second heating mode while applying the composition, e.g. with the heated surface at a lower-temperature. Alternatively, the heated surface may not be heated while applying the composition. Where appropriate, the heating device may include a switch that enables the user to control the operation of the heating device.

The heating device may also include one or more electronic components, for example, a light emitting device and/or an audible device, such as a LED and/or a speaker, indicating said device is in use or that an application temperature has been reached so that the user may use the device. The heating device may also include a temperature sensor enabling comparison of the heating device's temperature to a desired temperature. The heating device may also include a light emitting device and/or audible device, indicating a level of batteries (e.g., low charge) .

The composition may also be contained inside a cap that is suitable for being mounted in removable manner on the heating device, and the heating device may then have the shape of a conventional lipstick holder, for example.

In some embodiments, the heater endpiece may have a bevel shape and can come into contact with the composition disposed in the cap. By way of example, the composition may, at least during first use, present a surface that is not perpendicular to the longitudinal axis of the cap, e.g. sloping with substantially the same slope as the bevel of the heater endpiece. The cap may be arranged to be mounted in a position that is angularly identified relative to the heater endpiece, so that the bevel of the heater endpiece comes into contact with a surface of the composition that is substantially parallel thereto . The composition may be mounted in the cap against the return action of a resilient member that makes it possible to provide contact pressure between the composition and the heated surface when the cap is mounted on the heating device. This makes it possible to compensate for the composition being used up.

Initially, the composition and the heating device may be contained in the same packaging that may, for example, be a box, a blister, a sachet, a bag, or a case, amongst other packaging.

During packaging, the heater endpiece need not be in contact with the composition.

The composition may be in the form of a stick and may be secured to a mechanism making it possible to move it relative to a handle. Such mechanisms are conventionally used for packaging stick lipsticks, and are generally called "lipstick holders", and they may comprise at least two parts that can turn relative to each other, the turning movement being transformed into an axial movement of a cup carrying the stick of composition .

A stick of composition may have various diameters, for example from 5 mm to 40 mm, and of various shapes, for example oval or of banana shape for application, e.g., under the eyes to assist in ring reduction.

The heating device may include a removable protective cap for protecting the heater endpiece. Such a protective cap may be useful, in particular when the heater endpiece is used to apply the composition, since it makes it possible to preserve composition that remains on the heater endpiece after application, for example, to use the remaining composition later.

In exemplary embodiments, the heating device may be configured so as to be fastened in removable manner on a support carrying the composition. By way of example, the support may be a lipstick holder, the heating device possibly replacing the closure cap of such a holder, for example, and when said device is in place on the holder, it may close the space containing the composition in leaktight manner.

The heated surface may be heated by means of a heater element that may be made in various ways, e.g. in the form of a track that is etched or printed on a substrate, or by means of a resistor wire. Using an etched or printed track on a substrate makes it possible to produce the heater element with low thermal inertia, and that may be for reducing the time required to heat up the heated surface. In some embodiments, a temperature sensor may be provided on the substrate.

The heated surface may be made with various shapes, in particular depending on whether it is for coming into contact with the skin or the lips, or merely for heating the surface of the composition. By way of example, the heating device includes a heater endpiece comprising a bevel shape that may reproduce the shape of the end of a conventional stick of lipstick, for example. The heater endpiece may optionally be in the form of a body of revolution.

The visible height of the heater endpiece may lie in the range 0.5 mm to 10 mm, for example. The mean visible height may lie in the range 0.5 mm to 10 mm, for example, the mean height being measured up to a mid-point that is situated half way up the bevel, for a heater endpiece having a bevel-shaped end. In plan view, along the longitudinal axis of the heating device, the greatest dimension of the heated surface lies in the range 5 mm to 15 mm, for example.

In some embodiments, the heater endpiece may present a lateral surface that is circularly cylindrical, of diameter that is close to the diameter of a conventional stick of lipstick, e.g. lying in the range 5 mm to 15 mm. The heated surface may have an area lying in the range 0.2 square centimeters (cm²) to 1.8 cm², for example . At a distal end of the heater endpiece in particular, the heated surface may present a hollow, thereby making it possible to hold a supply of composition . The electrical power source may comprise one or more batteries, e.g. an optionally-rechargeable 1.5 volt battery.

The heater endpiece may be visually set off from the body of the heating device by using different materials for the endpiece and for the body, e.g. a metal for one and a thermoplastic material for the other.

The heater endpiece may be made with a sheet of a metal, e.g. stainless steel, aluminum, or with metal plating, e.g. gold plating. The heated surface may present a smooth (e.g. polished) surface without any portions in relief that might scratch the skin or the lips, or damage the stick of composition. The heated surface may not be perforated and may not have any projecting sharp edges. In another embodiment, the heated surface presents some rugosity so that the melted composition penetrates into the hollows defined by the surface in order to increase the load of composition, while remaining comfortable to the user. For similar purposes, the heating surface may be flocked.

The heating surface may also be made of soft silicon in order to give the heating surface improved sliding confort and softness.

The heater endpiece may project relative to the body of the heating device, and may be situated set back from the lateral surface thereof. This makes it possible to distance the grip surface from the heated surface.

Other exemplary embodiments of the present disclosure also provide a cosmetic treatment using an assembly as defined above. The method may include bringing the heated surface into proximity of, or into contact with, the composition, so as to deposit the composition on the heated surface, and/or to soften the surface of the composition. Depending on circumstances, the composition may be applied using the heated surface or using the layer of composition that has been softened at its surface.

Other exemplary embodiments of the invention also provide the actual heating device as such. The device may have the appearance of a lipstick holder, with a wide base . Thus, other exemplary embodiments of the present disclosure also provide a heating device comprising:

^• a heater endpiece; and

• a body defining a grip surface, the operating temperature of the heater endpiece lying in the range 35°C to 65°C, the endpiece preferably having a general bevel shape with an end face that slopes, and a lateral surface that is substantially cylindrical, of diameter preferably lying in the range 5 mm to 15 mm. The body may present a wide base, so as to reproduce the appearance of lipstick holders. The device may include a mechanism that makes it possible to move the endpiece axially, e.g. by rotation of the base.

The device may include a cap that houses the composition for application. The present disclosure also provides according to another aspect of the present invention an assembly for applying a cosmetic composition to keratinous materials, in particular a non-powder cosmetic composition, comprising : . an application device for applying the composition, comprising a supply of the composition, . a heating device to heat the composition, . a power source to supply electrical energy to the heating device, the power source being located side by side with respect to the application device. For example, a longitudinal axis of the power source and a longitudinal axis of the application device may extend substantially parallel to each other.

Such a device offers the advantage of not being cumbersome, as the power source is not in line with the application device.

The power source may comprise two batteries in line. The device may comprise an opening at one end to insert therein the application device, for example during storage and/or for heating the supply of composition. The heating surface may be biased against the composition by spring means.

The heating surface may be internal to the heating device or external to the heating device.

The application device may be completely inserted in the device when not in use or may have a portion that remains apparent. The heating device may comprise a part that serves as a closure cap for the application device. Embodiments of the present disclosure can be better understood on reading the following detailed description of non-limiting embodiments thereof, and on examining the accompanying drawings, in which:

• Figure 1 is a diagram, in elevation, showing a packaging and applicator assembly made in accordance with the invention; • Figures 2 to 6 are similar views showing other embodiments of the heating device consistent with the present disclosure;

• Figure 7 shows an example of packaging containing the heating device and the composition according to embodiments of the present disclosure;

^• Figure 8 is a diagram showing an example of a heater element in plan view;

• Figure 9 is a diagram, in elevation, showing a variant of a packaging and applicator assembly made in accordance with the embodiments of the present disclosure;

^• Figure 10 shows an embodiment detail of Figure 9, . Figure 11 shows a variant of an assembly comprising the composition, the heating device with the power source, and

. Figure 12 shows an assembly according to another aspect of the present disclosure.

The assembly 10 of the present disclosure shown in Figure 1 comprises a heating device 20 and a packaging and applicator device 30. The packaging and applicator device comprises a stick of composition P, e.g. lipstick, and a support 31 that may serve as a handle.

In the embodiment shown, support 31 is formed by a conventional holder, and includes a mechanism making it possible to move the stick of composition P axially, in response to turning two portions 32 and 33 of the holder relative to each other.

By way of example, the stick of composition P is carried within the mechanism by a cup (not shown) , said cup including studs that are engaged in two parts belonging to the portions 32 and 33 respectively, one part including longitudinal rectilinear slots and the other including helical slots, such that the cup and of the stick move axially when the two parts turn relative to each other. Examples of exemplary suitable mechanisms are described in publications US 6 340 258, US 6 086 276, US 6 371 673, US 5 171 096, and US 7 293 926

Heater device 20 includes a body 24, e.g. of elongate shape, housing an electrical power source 21, e.g. that is constituted by one or more optionally- rechargeable batteries, e.g. a 1.5 volt (V) battery, as shown .

Heater device 20 includes an external heated surface 22a that is defined by a heater endpiece 22 in the embodiment under consideration. Heated surface 22a is heated internally by a heater element 110 shown in isolation in Figure 8 and constituted by a resistor wire or by a resistor track 111 that is etched or printed on a substrate 113. Heater element 110 may comprise a wire of NiCr or of copper and nickel alloy such as Constantan® that is possibly coiled, or embedded in a matrix, e.g. made of ceramic. Heater element 110 may also comprise a metal plate of suitable electric resistance.

Heater element 110 may include a temperature sensor 112 that is carried by substrate 113, sensor 112 being suitable for sensing and regulating the temperature of the heater endpiece 22. In some embodiments, heater element 110 may be adhesively bonded, or fastened in some other way, against the inside face of the wall that defines the end face of heater endpiece 22 and heated surface 22a. Heating can be thus localized on heater endpiece 22 at the end face thereof.

In the embodiment shown, heater endpiece 22 is situated at a distal end of the body 24, thereby enabling said body to present an external lateral grip surface 24a that is not heated, and that is used to manipulate the heating device.

Heater endpiece 22 is defined by a metal wall for example, body 24 being made out of a thermoplastic material for example.

At its top end, body 24 may include an opening in which the endpiece is engaged.

In the embodiment under consideration, heater endpiece 22 may be situated set back from lateral surface 24a of the body 24, with an annular flat 24b being formed around endpiece 22. The edge of flat 24b thus may set off endpiece 22 visually to the user.

Heating device 20 may be arranged so as to constitute a closure cap for closing holder 31, and, for example, it may include a mounting skirt 25 that is suitable for being fastened in a removable and leaktight manner on the top portion of the holder. Inside heating device 20, a partition 28 may isolate the compartment containing electricity source 21 from the space for receiving top portion 32 of holder 31.

Heating device 20 may include a switch (not shown in the figures) enabling the heater element 110 to be switched on, e.g. for a predefined duration or until the switch is actuated again. The switch may be for example, a switch having momentary contact.

A visual and/or audible indicator may inform the user about the operating state of heating device 20.

Heater element 110 may be selected so that the temperature at the surface of heater endpiece 22 is greater than 35°C, the temperature being regulated to a temperature that may depend on the composition P to be applied, for example. The temperature at the surface of the heater endpiece may lie in the range 40⁰C to 65°C to avoid potentially overheating or causing discomfort to a user .

In the embodiment shown in Figure 1, heater endpiece 22 is in the form of a body of revolution about the longitudinal axis X of body 24 of heating device 20, but this could be otherwise in some embodiments.

Other shapes of heater endpieces are possible, for example any of the shapes shown in Figures 3 to 6 may be suitable.

In addition, as shown in Figures 2 to 6, heating device 20 need not be arranged so as to be fastened on holder 31, but may be independent thereof, the holder being closed by a conventional closure cap (not shown) , for example.

In some embodiments, heating device 20 may present the general appearance of a lipstick holder, so as to induce the user to use heating device 20 in a similar way as they would with a lipstick holder. In particular, heating device 20 may present a base 36 that is wide compared to its top portion. As shown in Figure 3, heater endpiece 22 may present a bevel shape, similar to the shape of the beveled top end of a stick of lipstick particularly before it is used for the first time, the end face of endpiece 22 sloping obliquely at an angle α of about 45° relative to longitudinal axis X, for example. The end face may define heated surface 22a.

Heater endpiece 22 may present an end face 22a that is concave, and that may be circularly symmetrical about longitudinal axis X, as shown in Figure 4.

Heater endpiece 22 may also present a hollow formed on a beveled end face 22a of heater endpiece 22, as shown in Figure 5. Such a hollow makes it possible for composition to accumulate on heater endpiece 22, prior to application.

In some embodiments, he heater endpiece 22 may, as shown in Figure 6, also present a rounded shape that is outwardly convex.

In some embodiments, the heating device 20 may include a protective cap 60 for protecting heater endpiece 20 when not in use, as shown in Figure 6.

Initially, heating device 20 and composition P may be contained in the same packaging 100, as shown in Figure 7. To use the heating device shown in Figure 1, the user may bring heater endpiece 22 into contact with the stick of composition P so as to heat the surface of said stick of composition P, and then apply the stick heated in this way to the region to be treated. In some embodiments, the user may load heater endpiece 22 with composition, e.g. by bringing said heater endpiece 22, once hot, into contact with the stick of composition P, then applying the composition present on heater endpiece 22 by moving it over the region to be treated. This method of applying the composition is suitable for the embodiment in Figure 1, as well as for the embodiments in Figures 2 to 6 among others. Still other shapes may be used for heater endpiece 22. The device in Figure 1 may thus be made with any one of examplary heater endpieces 22 shown in Figures 2 to 6 among others . As shown in Figure 9, composition P may also be contained in cap 60, so as to come into contact with heater endpiece 22 in such a manner as to enable a certain quantity of composition to transfer to heater endpiece 22, heater endpiece 22 enabling composition P transferred in this way to be applied to the region to be treated

In the exemplary embodiment of Figure 9, endpiece 22 has a bevel shape, for example. In such embodiments, and by way of example, composition P may have a surface 61 that slopes relative to the longitudinal axis of the cap 60, in order to be substantially parallel to the bevel of endpiece 22, and make it easier to load the entire surface of the bevel with composition.

In some embodiments, heater element 110 extends parallel to the bevel-shaped end wall, below said wall, as shown in Figure 10. Where desired, endpiece 22 may house an electronic circuit mounted on a card 65, and an electrical power source constituted by one or more batteries 66, e.g. one or more button batteries or a rechargeable battery.

Cap 60 may include a mechanism (not shown), e.g. a spring, making it possible, where desired, to move composition P towards heater endpiece 22 to compensate for composition P being used up. In some embodiments, endpiece 22 may be movable relative to body 24 in order to enable said endpiece to penetrate deeper into cap 60 as composition P is used up.

When heater endpiece 22 may be moved relative to body 24, base 36 may, for example, turn relative to the top portion of body 24, to drive a mechanism that causes endpiece 22 to move in a manner similar to conventional lipstick holders, e.g. as shown in Figure 1. The user may thus position endpiece 22 at a desired height to take composition P contained in cap 60. Such embodiments may be advantageous in that they enable the user to continue using the same actions as for conventional lipstick holders.

Composition P may possibly be poured directly into cap 60, so as to have a sloping surface 61, as shown in Figure 9.

In some embodiments, e.g. as shown in figure 11, the assembly contains the electrical power source 21, e.g. one or more 1.5 V batteries (for example AA or AAA types), and the heating device 20. A part of the assembly has, at one of the ends thereof, a cap 104 that can be removed by the user to change the batteries if desired. In this embodiment, the heating device 20 is at an external end of a housing 116 in which the user can introduce the composition P, the holder 31 remaining at least partially outside of the housing 116. The composition P may be brought into contact with the heated surface 22a after removal of the holder 31from the housing 116.

Naturally, the embodiments of the present disclosure are not limited to the embodiments described above.

Heater endpiece 22 may have the same or similar color as the composition, e.g. except for the heated surface, or, in some embodiments, including the heated surface .

In a variant, the electricity source may be a system that produces electricity using a movement of the device, as described in US 2008/0143214.

The composition may be for application to the skin. In some embodiments according to another aspect of the present disclosure, e.g. as illustrated in figure 12, heating device 20, composition P and its holder 31 may be contained in a device 300. This device 300 may comprise an electrical power source 21, e.g. one or more 1.5 Volt batteries, as shown. The heated surface 22a is biased against the composition P via an elastic return member 130, e.g. a spring, disposed in the device 300.

The device 300 may include a switch 101 which may control heating device activation, for example for a predefined amount of time or until the switch is activated again. Device 300 may also include one or more audible alert producing devices and/or light emitting devices 102, e.g. one or more speakers or LEDs, to inform the user on a functioning state of heating device 20, e.g. on its temperature and/or on the charge of its batteries .

Device 300 may include an aperture 103 to allow the user to introduce the stick of composition P in the device 300 to bring an end of the stick in contact with the heating device 20.

In some embodiments, there is no aperture on the side of the device 300 and the stick of composition P is placed in contact with heating device 20 by opening a lid of the device 300, as shown in figure 12.

The device may comprise an ejection button 105, that is depressed by the user to raise the holder 31 and facilitate grasping thereof by the user.

Figures 11 and 12 disclose embodiments in which the batteries extend in line and extend side by side with respect to the stick of composition and the holder thereof. This helps minimize the bulk of the device.

In the device of figure 11, the user may use the heated surface 22a to apply the composition. In a variant, not shown, the heated surface is internal to the housing 116, and the user uses the heating surface to soften the end of the stick, before applying the latter on keratinous materials.

The expression "comprising a" should be understood as being synonymous with "comprising at least one".

Claims

1. An assembly for applying a non-powder cosmetic to the lips or to the skin, the assembly comprising:

• a supply of composition (P) ; and • a heating device (20) that is not secured to the supply of composition or that is separable from the supply of composition for the application of the composition onto the lips or the skin, said heating device comprising an electrical power source and comprising a body (24) that is provided externally, at an axial end, with a heated surface (22a) , the body defining an external lateral grip surface (24a) that is not heated.

2. An assembly according to claim 1, temperature of the heating device being greater than or equal to 35°C during operation of the heating device.

3. An assembly according to claim 1 or claim 2, the composition (P) and the heating device are both disposed in a packaging (100) .

4. An assembly according to any one of claims 1 to 3, the composition (P) being in the form of a stick.

5. An assembly according to claim 4, the composition being secured to a mechanism making it possible to move the composition relative to a handle (32, 33) .

6. An assembly according to any one of claims 1 to 5, the heating device including a removable protective cap (60) for protecting the heated surface.

7. An assembly according to any one of claims 1 to 5, the heating device being arranged so as to be fastened in removable manner on a support (31) carrying the composition .

8. An assembly according to claim 5, the heating device being arranged so as to be fastened on the handle (31) so as to close a space containing the composition.

9. An assembly according to any one of claims 1 to 8, the heated surface being defined by a metal wall.

10.An assembly according to any one of claims 1 to 9, the heating device including a heater element (110) having at least one track that is etched or printed on a substrate, and configured to heat the heated surface.

11.An assembly according to any one of claims 1 to 10, the heated surface being defined by a heater endpiece (22) having a bevel shape.

12.An assembly according to any one of claims 1 to 11, the heated surface being defined by a heater endpiece presenting a surface that is outwardly concave.

13.An assembly according to any one of claims 1 to 9, the heated surface being defined by a heater endpiece that is in the form of a body of revolution.

14.An assembly according to any one of claims 1 to 13, the composition configured for application to the lips .

15.An assembly according to claim 6, the composition being contained in the cap (60) .

16.An assembly (300) for applying a cosmetic composition to keratinous materials, comprising: . an application device for applying the composition, comprising a supply of the composition, . a heating device to heat the composition,

. a power source to supply the heating device with electrical energy, the power source being located side by side with respect to the application device.