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.