WO2021163918A1

WO2021163918A1 - Device for storing and dispensing at least two cosmetic products and related method

Info

Publication number: WO2021163918A1
Application number: PCT/CN2020/075829
Authority: WO
Inventors: Jinseok Kim
Original assignee: L'oreal
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2021-08-26
Also published as: FR3107167A1

Abstract

The present invention provides a device(10) and a method for dispensing at least two cosmetic products, the device(10) comprises: a container (12) defining at least a first reservoir (14) configured to contain a first cosmetic product and a second reservoir (16) configured to contain a second cosmetic product; a first airless dispenser (18) comprising a first sampling tube (104) immersed in the first reservoir (14); a second dispenser (20) comprising a second sampling tube (124) immersed in the second reservoir (16); a distribution nozzle (22), connected to the first airless dispenser (18) and to the second dispenser (20), the distribution nozzle (22) defining at least a duct (144, 146) for dispensing the first cosmetic product and the second cosmetic product, the nozzle (22) being mobile with regards to the container (12) between a rest position and a dispensing position; the first reservoir (14) has at least a lower region (50) located below the second reservoir (16) in the container (12).

Description

Device for storing and dispensing at least two cosmetic products and related method

The present invention concerns a device for storing and dispensing at least two cosmetic products, comprising:

- a container defining at least a first reservoir configured to contain a first cosmetic product and a second reservoir configured to contain a second cosmetic product ;

- a first airless dispenser comprising a first sampling tube immersed in the first reservoir ;

- a second dispenser comprising a second sampling tube immersed in the second reservoir ;

- a distribution nozzle, connected to the first airless dispenser and to the second dispenser, the distribution nozzle defining at least a duct for dispensing the first cosmetic product and the second cosmetic product, the nozzle being mobile with regards to the container between a rest position and a dispensing position.

The device is configured to deliver the mixture of the at least two cosmetic products, to let the user form a mixture of the at least the two products before its application on a body surface.

The mixture of the at least two cosmetic products is for example a care product, a make-up product, and/or a hair coloration product.

More generally, a cosmetic product is a product as defined in EC Regulation N° 1223/2009 of the European Parliament and the Council dated November 30, 2009, relating to cosmetic products.

Some mixtures of cosmetic products, for example in the field of trio total care products are unstable in time and therefore active in a limited period in time. This is the case for example when a total whitening care product is mixed with deep whitening product, anti-oxidation product and outer layer color correction and protection.

Some mixtures have a higher viscosity than the viscosity of each cosmetic product from which they are prepared, the viscosity of the mixture being too high to enable the mixture to flow correctly in a distribution channel.

When such a situation occurs, the mixture cannot be stored in a unique container of a dispensing device. The cosmetic products are packaged separately and the mixture is directly prepared at in a separate accessory.

In some instances, at least one of the products dispensed by the device is sensitive to contamination by air (for example a dye) , and has to be protected from air during storage. An airless pump is used to dispense the sensitive product.

On the contrary, another product dispensed by the device may not be air sensitive, and can be distributed with a traditional air pump.

In order to simultaneously deliver two different products, it is known to use a device which comprises a reservoir with a first airless pump for dispensing the air sensitive product and another reservoir with an air pump for dispensing the non air sensitive product.

Generally, the second reservoir is located aside from the first reservoir, since the first reservoir contains a piston, which compensates the decrease of volume when the first product is delivered. The device is therefore very bulky.

Moreover, the two products should generally be delivered simultaneously with a predetermined ratio from a single nozzle, which is pressed by the user.

When only one nozzle dispenses the two products, the first dispenser placed in the first reservoir and the second dispenser placed in the second reservoir are located quite far apart. There is a risk of unbalanced pressing of the nozzle, which will deliver the products with a ratio different from the predetermined ratio.

Moreover, the device will create lots of waste, because of the large size of the nozzle and of the containers.

One aim of the invention is therefore to provide a very compact and yet easy to use device for storing and dispensing two cosmetic products, at least one of the products being air sensitive.

To this aim, the subject matter of the invention is a device of the above type, characterized in that the first reservoir has at least a lower region located below the second reservoir in the container.

Making a first reservoir with a lower region located below the second reservoir in the container, allows the first reservoir to undergo a change of volume due to its airless nature, without disturbing the product distribution from the second reservoir.

This arrangement results in a very compact device, yet very efficient, because the two dispensers can be placed aside, close to each other, avoiding imbalances when the distribution nozzle is pushed towards the container.

In a variant, the first reservoir has a chimney protruding from the lower region, the chimney protruding through the second reservoir.

By providing a chimney protruding from the lower region, access to the cosmetic product contained in the first reservoir is easy and allows the setup of the first airless dispenser in the chimney, to have an easy sampling of product from the first reservoir.

In a variant, the first reservoir comprises a mobile piston closing down the lower region, the piston being movable in the lower region when a quantity of first cosmetic product is dispensed via a stroke of the nozzle between the rest position and the dispensing position.

Providing a piston at the bottom of the first reservoir is possible thanks to the arrangement of the first region of the first reservoir below the second reservoir. The first product located in the first reservoir is therefore stored in a very tight manner, in which air is very unlikely to contaminate the product, while allowing a safe and efficient dispensing when the nozzle is activated.

In a variant, the container comprises a lower fixed wall, the piston being interposed between the lower fixed wall and the first region, the lower fixed wall having at least one through opening.

Having a lower fixed wall protects the piston, while the at least one air opening allows balance of pressure between one side and the other of the piston.

In variants:

- the container comprises a shoulder cap, the first airless dispenser and the second dispenser being inserted in the shoulder cap;

- the second dispenser is an air dispenser, the shoulder cap delimiting at least an air opening, emerging into the second reservoir.

The arrangement of the first reservoir and the second reservoir also allows using an air dispenser which is in contact with the second reservoir, and which connects to the outside of the device through at least an air opening to compensate for the dispensing of product.

In variants:

- the shoulder cap has a first outer sleeve for receiving the first dispenser, the first dispenser having a pump cap mounted on the first outer sleeve and a gasket interposed between the first outer sleeve and the pump cap ;

- the pump cap has at least one internal locking stop, the first outer sleeve delimiting at least a retaining housing for the internal locking stop, receiving the internal locking stop.

Providing a sleeve and pump cap mechanism allows for a very efficient sealing of the first airless dispenser on the cap, limiting the risk of contamination. This sealing is reinforced by the use of a locking stop inserted into a retaining housing.

In a variant, the first reservoir has a chimney protruding from the lower region, through the second reservoir to the shoulder cap, the chimney having an outer shoulder with an annular outer ridge protruding upwardly, the shoulder cap having an annular groove complementary to the annular rim, tightly receiving the annular rim.

The lateral annular ridge protruding from the chimney, inserted an annular housing complementary to the bulge also contributes to preventing the entrance of air into the first reservoir, favoring sealing.

In variants:

- the nozzle is mobile in translation with regards to the container between the rest position and the dispensing position, the container having at least a guiding bar, protruding from the shoulder cap, the nozzle having a guiding tube, engaged around the guiding bar ;

- the first sampling tube and the second sampling tube each have a free end emerging respectively in the first reservoir and in the second reservoir, the free ends of the sampling tubes being at the same height, when the device is held vertically.

Using sampling tubes at the same height allows a very balanced product dispensing, with the same stroke of the nozzle. The distribution of product is therefore very controlled.

In a variant the nozzle comprises two separate ducts, each connected respectively to the first airless dispenser and to the second dispenser, the ducts emerging outside of the device via separate openings.

Providing a nozzle with two separate ducts avoids cross contamination of the products before they are dispensed.

The invention also concerns a method for dispensing at least two cosmetic products, comprising:

- providing a device as defined above;

- moving the nozzle between the rest position and the dispensing position;

- delivering a first cosmetic product through the first airless dispenser and the nozzle;

- delivering simultaneously a second cosmetic product, through the second dispenser and the nozzle.

The method according to the invention may comprise the following feature:

- the device comprises a mobile piston closing the first reservoir, the piston moving upwardly in the lower region when the nozzle is moved from the rest position to the dispensing position.

The invention will be better understood, upon reading of the following description, given solely as an example, and made in reference to the following drawings, in which:

- [Fig. 1] figure 1 is a view taken in section in vertical section along a vertical medial plane of a first device for storing and dispensing a cosmetic product according to the invention;

- [Fig. 2] figure 2 is a view of a container delimiting two reservoirs, the first reservoir having a lower region located below the second reservoir;

- [Fig. 3] figure 3 is a view analogous to figure 2, taken in section along a vertical median plane;

- [Fig. 4] figure 4 is a section of view of a detail of figure 1, illustrating the sealing of the first product dispenser on the first reservoir;

- [Fig. 5] figure 5 is a view of a nozzle for dispensing the product.

A first device 10 for storing and dispensing a cosmetic composition is shown in figure 1.

The cosmetic composition is for example a composition for care of a body surface, a composition for make-up of a body surface or preferably, a composition for coloring keratin fibers of a user, in particular the hair of a user.

In order to form the cosmetic composition, at least two cosmetic products are mixed.

The cosmetic products are products such as defined in EC Regulation N° 1223/2009 of the European Parliament and the Council of November 30, 2009.

In reference to figure 1, the device 10 extends along a longitudinal axis A-A’, which is here vertical.

The device 10 comprises a container 12 delimiting a first cosmetic product reservoir 14 and a second cosmetic product reservoir 16, the first reservoir 14 being at least partly located below the second reservoir 16.

The device 10 comprises a first cosmetic product dispenser 18, a second cosmetic product dispenser 20 and a nozzle 22, mobile with regard to the container 10 simultaneously the first dispenser 18 and the second dispenser 20 to dispense simultaneously the first cosmetic product and the second cosmetic product.

The container 12 further comprises a vessel 30 and a shoulder cap 32 mounted on the vessel 30 to close it upwardly.

It further comprises, inside the vessel 30, a piston 34 and advantageously, above the shoulder cap 32, a protection skirt 36.

The vessel 30 extends along the longitudinal axis A-A’, which is represented vertical in figure 1. It comprises a peripheral wall 38 of axis A-A’ and a lower wall 40, the

walls

38, 40 delimiting an inner volume 39.

The vessel 30 delimits an upper opening, closed by the shoulder cap 32 and a lower opening, closed by the lower wall 40.

The peripheral wall 38 comprises, along its upper edge, an outer shoulder 42, visible in figure 4, and an annular rim 44 for retaining the shoulder cap 32.

The lower wall 40 has through openings 46 which open in the inner volume 39 defined inside the peripheral wall 38. The through openings 46 emerge outside of the device 10.

The vessel 30 further comprises a linear transverse partition 48 separating the inner volume 39 in a first lower region 50 and a second upper region 52. It comprises a chimney 54 protruding upwardly from the transverse partition 48 to the shoulder cap 32. The chimney 54 emerges downwardly in the lower region 50.

In this example, the partition 48 comprises a lateral stepped connection 56 to the peripheral wall 38, and a lower transverse plate 58 extending perpendicularly to the axis A-A’.

Advantageously, the connection 56 is located approximately at half the height of the peripheral wall 38, in particular between 40%and 60%of the height of the peripheral wall 38. It tightly connects the partition 48 to the peripheral wall 38 around the whole periphery of the partition 48.

The partition 48 is also fluid tight.

The chimney 54 protrudes longitudinally towards the shoulder cap 32 from the transverse partition 48. It is located parallel and apart from the axis A-A’.

The connection between the chimney 54 and the partition 48 is fluid tight, so that a fluid contained in the lower region 50 flows exclusively through the chimney 54, without entering the first region 52 above the partition 48 and around the chimney 54, outside of the chimney 54.

As shown in figure 4, the chimney 54 advantageously has an upper shoulder 60 and an inner annular rim 62 protruding from the upper shoulder 60.

It further comprises an outer ridge 64 protruding from the shoulder 60, parallel to the inner rim 62. The height of the outer ridge 64 is smaller than the height of the inner rim 62.

The chimney 54 also delimits on its outer peripheral surface, below the upper shoulder 60, a horizontal inner housing 66 for tightly fixing the shoulder cap 32.

The piston 34 is located above the lower wall 40 and below the transverse partition 48. It tightly closes the lower region 50.

Thus, the first reservoir 14 has a first region 50 delimited downwardly by the piston 34, and upwardly by the partition 48. The first reservoir 14 further has an upper canal 68 located inside the chimney 54 and emerging through the shoulder cap 32.

The first reservoir 14 contains a first air sensitive cosmetic product.

The second reservoir 16 is delimited downwardly by the partition 48, and upwardly by the shoulder cap 32 through which is emerges. It is delimited also by the outer surface of the chimney 54 which protrudes through the second reservoir 16.

As shown in figures 2 and 3, the shoulder cap 32 has an upper partition 70, and an outer peripheral edge 72.

The shoulder cap 32 further comprises a first outer sleeve 74 delimiting a first opening through which the chimney 54 emerges, and a second outer sleeve 76 delimiting a second opening through which the second reservoir 16 emerges.

It further comprises an inner tab 78 (see figure 4) , protruding downwardly for tightly fixing the chimney 54 and guides 80 (see figures 2 and 3) for guiding the nozzle 22 displacement with regard to the container 12.

The upper partition 70 upwardly closes the vessel 30. In this example, it has a slightly frustroconical comical shape with a central axis corresponding to the longitudinal axis A-A’. As shown in Figure 1, the inclination angle α of the cone is for example comprised between 10° and 80°.

The outer peripheral skirt 72 protrudes downwardly from the outer edge of the upper partition 70. It rests on the outer shoulder 42. It delimits an external annular groove 83 opening downwardly receiving the annular rim 44 in a tight manner.

The upper partition 70 delimits, below the first outer sleeve 74, an internal annular groove which opens downwardly, the annular groove tightly receiving the outer ridge 64.

The upper partition 70 also defines upper through openings 82 (see figure 2) emerging in the second reservoir 16 to equilibrate pressure when the second cosmetic product is sampled from the second reservoir 16.

The first outer sleeve 74 and the second outer sleeve 76 are located aside each other, with their axis on each side of the longitudinal axis A-A’.

Each

outer sleeve

74, 76 has an outside annular stop 84, which protrudes radially outside of the

sleeve

74, 76.

The first outer sleeve 74 further comprises a second lower annular stop 86 delimiting with the annular stop 84, an intermediate annular housing 88.

The inner tab 78 protrudes downwardly around the chimney 54. It has a shape complementary to the shape of the upper part of the chimney 54. It comprises at least an inner undercut protrusion 90 received in the inner horizontal housing 66. This favors tightness of the connection between the shoulder cap 32 and the chimney 54.

As shown in figure 1, the first dispenser 18 is an airless dispenser. It is able to pump product from the first reservoir 14 to the nozzle 22, without contamination of air and without air compensation in the first reservoir 14.

The first dispenser 18 comprises an airless pump 100 mounted in the chimney 54 of the first reservoir 54, a mobile stem 102 connecting the airless pump 100 to the nozzle 22, and a sampling tube 104, mounted upstream of the airless pump 100 to sample the first cosmetic product in the first reservoir 14.

It further comprises a pump cap 106 to fix the airless pump 100 on the first outer sleeve 74 and a gasket 108 (see figure 4) to provide a sealing between the pump cap 106 and the airless pump 100.

The stem 102 is a mobile hollow rod which controls the actuation of the airless pump 100. It defines a product outlet at the top end of the stem 102. The outlet is inserted in the nozzle 22.

The displacement of the stem 102, generally parallel to the longitudinal A-A’, allows distribution of the first cosmetic product from the sampling tube 104 through the airless pump 100 to the product outlet.

The airless pump 100 has an upper collar 110 which extends radially over the edge of the first outer sleeve 74.

The pump cap 106 has an internal locking stop 112 inserted in the corresponding annular housing 88, to tightly lock in place the pump cap 106 on the first outer sleeve 74, and to apply the upper collar 110 on the first outer sleeve 74 with interposition of the gasket 108.

The sampling tube 104 protrudes downwardly from the airless pump 100. It defines a free open end 114 (see figure 1) located at a height H from the bottom of the device 10 taken along the longitudinal axis A-A’. It is here located at the bottom of the chimney 54, close to the lower region 50.

The second dispenser 20 comprises an air pump 120 and similarly to the airless pump 100, a mobile stem 122, a sampling tube 124, and a pump cap 126.

As described above, the air pump 120 is able to dispense product from the second reservoir 16 sampled through the sampling tube 124 to the mobile stem 122 and to the nozzle 22.

The air pump 120 has an upper collar 130 applied on the upper edge of the second outer sleeve 76.

The pump cap 126 has an internal stop 132 received under the annular stop 84 of the second outer sleeve 76.

The mobile stem 122 has a structure similar to the structure of stem 102.

The product outlets of the stems 102, 122 are located at the same height from the bottom of the container 12.

Similarly, the sampling tube 124 has a free open end 125 located at the same height H as the free open end 114 of the sampling tube 104.

In the example shown in figure 2, the guides 80 comprise at least a guiding bar 92, preferentially two guiding bars 92, located on either side of a plane containing the central axis of the first outer sleeve 74 and of the second outer sleeve 76. Each guiding bar 92 extends parallel to the axis A-A’. The guides 80 also comprise a guiding plate 94 protruding vertically from the shoulder cap 32.

The nozzle 22 has a central hub 140 and a protruding pump head 142. In the example of figure 5, it comprises a first dispensing duct 144 for dispensing the first cosmetic product and a second separate dispenser duct 146 for dispensing the second cosmetic product, the

ducts

144, 146 being supported by the central hub 140.

The nozzle 22 further comprises, for each guiding bar 92 on the shoulder cap 32, a corresponding guiding tube 148 supported by the central hub 140.

The central hub 140 comprises an outer peripheral band 150 extending around axis A-A’. The peripheral band 150 supports the

ducts

144, 146 and each guiding tube 148.

The pump head 142 protrudes radially from the peripheral band 150. In this example, the first dispensing duct 144 and the second dispensing duct 146 are totally distinct and emerge each in an outer opening respectively 152, 154 located aside from each other at the end of the pump head 142.

In the example of figure 5, each dispensing

duct

144, 146 comprises an upstream longitudinal portion 156 receiving a

respective stem

102, 122 and a downstream transverse portion 158 connecting the upstream portion 156 to a

respective opening

152, 154.

The first cosmetic product received from the first stem 102 flows in the first dispensing duct 144 to the first opening 152, without contact with the second cosmetic product flowing in the second dispensing duct 146 from the second stem 122.

The guiding tubes 148 each receives a guiding bar 92.

The nozzle 22 is therefore mobile in translation parallel to the axis A-A’ from an upper rest positon, in which the cosmetic products are confined in their

respective reservoirs

14, 16 to a lower dispensing position, in which the

pumps

100, 120 have been activated to dispense product from the

reservoirs

14, 16.

During manufacturing, the container 12 is provided with the piston 34 inserted in the lower region 50. The first air sensitive cosmetic product is filled in the first reservoir 14 above the piston 34.

Then, the first dispenser 18 is set in place on the first outer sleeve 74 of the shoulder cap 32. The gasket 108 is interposed between the upper collar 110 of the airless pump 100 and the pump cap 106.

Thanks to the tight fixation of the shoulder cap 32 on the vessel 30, in particular at the outer peripheral skirt 72 on the outer shoulder 60, and around the first outer sleeve 74, the first cosmetic product is tightly contained into the first reservoir 14 between the piston 34 and the pump cap 106 of the first dispenser 18. No contamination by external air occurs, thanks to the fluid tightness obtained in the first reservoir 14.

Then, the second reservoir 16 is filled with the second cosmetic product. The second dispenser 20 is put in place on the second outer sleeve 76, by fixing the pump cap 126 on the annular stop 84. Air equilibrium can be obtained through openings 82 made in the shoulder cap 32 and the second outer sleeve 76. The respective mobile stems 102, 122 then protrude parallel to the axis A-A’ above the shoulder cap 32.

The protective skirt 36 is then put in place above the shoulder cap 32.

Then, the nozzle 22 is put in place on the

stems

102, 122. A disposable ring (not shown) is inserted between the top of the skirt 36 and the nozzle 22 to prevent motion of the nozzle 22 during storage.

The use of the device 10 for dispensing cosmetic products will be now described.

When a dose of the first and the second cosmetic product is to be dispensed, the user pushes the nozzle 22 downwardly towards the container 12. The movement of the nozzle 22 in translation along the axis A-A’ is advantageously guided by the guides 80 received in the guiding tubes 148.

During this movement, the mobile stems 102, 122 move downwardly and activate the

pumps

100, 120.

The first cosmetic product is then pumped from the first reservoir 14 in the sampling tube 104, through the airless pump 100 to the first mobile stem 102 and through the first dispensing duct 144 to the first opening 152.

Simultaneously, the second cosmetic product is pumped from the second reservoir in the sampling tube 124, through the air pump 120, the mobile stem 122, the second dispensing duct 146 to the second opening 154.

The two products can then be mixed by the user at the outlet of the device 10, outside the device 10.

The dosing of the first cosmetic product displaces the piston 34 upwardly to compensate for the volume which has been removed. In the second reservoir 16, a product which has been removed is replaced with air which permeates in the second reservoir 16 through the openings 82.

Thanks to the arrangement of the second reservoir 16, located above the lower region 50 of the first reservoir 14, when the axis A-A’ of the container 12 is vertical, the container 12 containing the two cosmetic product remains very compact, while still allowing a delivery through an airless pump 100 for the first cosmetic product and advantageously through an air pump 120 for the second cosmetic product.

The nozzles 22 are located very close to one another and quite close to the central longitudinal axis A-A’ of the device 10. This allows a simple and balanced movement of the nozzle 102, leading a very precise delivery of the two cosmetic products.

The sealing of the first reservoir 14, in particular at the first outer sleeve 74 around the chimney 54, is extremely tight, thanks to the provision of a gasket 108, of an inner undercut protrusion 90 received in an inner horizontal housing 66 and advantageously to an inner ring 62 received in the inner housing 66.

Advantageously, the free ends 114, 134 of the sampling tubes open at the same height, which allows a constant stroke for both

pumps

100, 102.

The device 10 is therefore very precise in its product delivery, while remaining compact and allowing full protection of the cosmetic products which are delivered.

Claims

Device (10) for storing and dispensing at least two cosmetic products, comprising:

- a container (12) defining at least a first reservoir (14) configured to contain a first cosmetic product and a second reservoir (16) configured to contain a second cosmetic product;

- a first airless dispenser (18) comprising a first sampling tube (104) immersed in the first reservoir (14) ;

- a second dispenser (20) comprising a second sampling tube (124) immersed in the second reservoir (16) ;

- a distribution nozzle (22) , connected to the first airless dispenser (18) and to the second dispenser (20) , the distribution nozzle (22) defining at least a duct (144, 146) for dispensing the first cosmetic product and the second cosmetic product, the nozzle (22) being mobile with regards to the container (12) between a rest position and a dispensing position;

characterized in that the first reservoir (14) has at least a lower region (50) located below the second reservoir (16) in the container (12) .
Device (10) according to claim 1, wherein the first reservoir (14) has a chimney (54) protruding from the lower region, the chimney (54) protruding through the second reservoir (16) .
Device (10) according to any one of the preceding claims, wherein the first reservoir (14) comprises a mobile piston (34) closing down the lower region (50) , the piston (34) being movable in the lower region (50) when a quantity of first cosmetic product is dispensed via a stroke of the nozzle (22) between the rest position and the dispensing position.
Device (10) according to claim 3, wherein the container (12) comprises a lower fixed wall (40) , the piston (34) being interposed between the lower fixed wall (40) and the first region (50) , the lower fixed wall (40) having at least one through opening (46) .
Device (10) according to any one of the preceding claims, wherein the container (12) comprises a shoulder cap (32) , the first airless dispenser (18) and the second dispenser (20) being inserted in the shoulder cap (32) .
Device (10) according to claim 5, wherein the second dispenser (20) is an air dispenser, the shoulder cap (32) delimiting at least an air opening (82) , emerging into the second reservoir (16) .
Device (10) according to any one of claims 5 to 6, wherein the shoulder cap (32) has a first outer sleeve (74) for receiving the first dispenser (18) , the first dispenser (18) having a pump cap (106) mounted on the first outer sleeve (74) and a gasket (108) interposed between the first outer sleeve (74) and the pump cap (106) .
Device (10) according to claim 7, wherein the pump cap (106) has at least one internal locking stop (112) , the first outer sleeve (74) delimiting at least a retaining housing (88) for the internal locking stop (112) , receiving the internal locking stop (112) .
Device (10) according to any one of claims 5 to 8, wherein the first reservoir (14) has a chimney (54) protruding from the lower region (50) , through the second reservoir (16) to the shoulder cap (32) , the chimney (54) having an outer shoulder (60) with an annular outer ridge (64) protruding upwardly, the shoulder cap (32) having an annular groove (88) complementary to the annular rim (62) , tightly receiving the annular rim (62) .
Device (10) according to any one of the preceding claims, wherein the nozzle (22) is mobile in translation with regards to the container (12) between the rest position and the dispensing position, the container (12) having at least a guiding bar (92) , protruding from the shoulder cap (32) , the nozzle (22) having a guiding tube (148) , engaged around the guiding bar (92) .
Device (10) according to any one of the preceding claims, wherein the first sampling tube (104) and the second sampling tube (124) each have a free end (114, 125) emerging respectively in the first reservoir (14) and in the second reservoir (16) , the free ends (114, 125) of the sampling tubes (104, 124) being at the same height, when the device (10) is held vertically.
Device (10) according to any one of the preceding claims, wherein a nozzle (22) comprising two separate ducts (144, 146) , each connected respectively to the first airless dispenser (18) and to the second dispenser (20) , the ducts (144, 146) emerging outside of the device (10) via separate openings (152, 154) .
Method for dispensing at least two cosmetic products, comprising:

- providing a device (10) according to any one of the preceding claims;

- moving the nozzle (22) between the rest position and the dispensing position;

- delivering a first cosmetic product through the first airless dispenser (18) and the nozzle (22) ;

- delivering simultaneously a second cosmetic product, through the second dispenser (20) and the nozzle (22) .
Method according to claim 13, wherein the device (10) comprises a mobile piston (34) closing the first reservoir (14) , the piston (34) moving upwardly in the lower region (50) when the nozzle (22) is moved from the rest position to the dispensing position.