Abstract: A system for mixing two cosmetic products includes a tubular bottle defining a first reservoir containing a first product to be mixed, a tubular cartridge defining a second reservoir containing a second product to be mixed, a retaining device suitable for retaining the cartridge on the bottle in an injection position in which the first reservoir communicates with the second reservoir via the inlet orifice of the base and the injection orifice of the cartridge, a perforator having an upper edge designed to perforate the cap that seals the inlet orifice when the cartridge occupies the injection position, and a piston that seals the lower end of the cartridge and that is axially slidably mounted between an initial bottom position and a final top position in order to push the second product through the injection orifice from the second reservoir to the first reservoir.

Abstract: An application head for a product includes a body that is substantially of revolution and has at its front axial end a hollow spherical surface forming a housing that receives a magnetizable applicator ball with a tight fit, said applicator ball being held by a magnet, this body being intended to hold the product on its inside, wherein the body comprises a chamber located along the passage of the product coming from the inside of this body so as to lead into the housing, this chamber containing a magnetized or non-magnetized valve held on its inside, which can slide through a short axial travel while remaining stuck to the applicator ball, so as to close the passage in the rear position and to open this passage in the front position.

Abstract: An application head for a product includes a body that is substantially of revolution and has at its front axial end a hollow spherical surface forming a housing that receives a magnetizable applicator ball with a tight fit, said applicator ball being held by a magnet, this body being intended to hold the product on its inside, wherein the body comprises a chamber located along the passage of the product coming from the inside of this body so as to lead into the housing, this chamber containing a magnetized or non-magnetized valve held on its inside, which can slide through a short axial travel while remaining stuck to the applicator ball, so as to close the passage in the rear position and to open this passage in the front position.

Abstract: A powder applicator includes a reservoir for powder and a porous membrane tensioned over the reservoir. A portion of the powder is stored in the vicinity of the membrane, in a very open synthetic foam pad between the reservoir and the membrane and communicating with the reservoir.

Abstract: A powder-dispensing brush includes a powder reservoir, a tuft of hairs secured to the reservoir, in particular by a sleeve. The powder is caused to migrate from the reservoir into the tuft, which includes at least one group of relatively more dense hairs and one group of relatively less dense hairs. The powder is caused to migrate by at least one passage communicating with the reservoir and coming out between the groups of relatively more dense hairs and relatively less dense hairs or into the group of relatively dense hairs.