Packaging device for a cosmetic product, the device comprising (3): - a sealed package (7)； - a submersible tubular body (11), which passes through the wrapper (7) and is tightly connected to the wrapper (7), delimiting the submersible body (11) inwardly a chamber (13) that flows into the interior of the wrapper (7) ) by means of an extraction hole (15)； - a valve (17) capable of adopting a sealing position of the extraction orifice (15) and a release position of the extraction orifice (15), the device (3) comprises a cosmetic product arranged in the wrapper (7)； and the valve (17) comprises: - a shutter (53) provided to seal the extraction orifice (15), - a core (55) attached to the shutter (53) and inserted into the extraction orifice (15), - a limb part (57) attached to the soul (55), provided with an elastic member (59) that recovers the valve (17) in a sealed position, forming the shutter (53), the soul (55) and the limb part (57) one piece with each other； characterized in that the wrapper (7) is flexible and because the extraction hole (15) is an elongated groove in a first direction (D1), the end portion (57) of the valve (17) being formed to be able to be introduced through of the groove.Dispositivo de envase para un producto cosmético, comprendiendo el dispositivo (3): - un envoltorio estanco (7)； - un cuerpo tubular sumergible (11), que atraviesa el envoltorio (7) y está unido de forma estanca al envoltorio (7), delimitando el cuerpo sumergible (11) interiormente una cámara (13) que desemboca en el interior del envoltorio (7) mediante un orificio de extracción (15)； - una válvula (17) susceptible de adoptar una posición de obturación del orificio de extracción (15) y una posición de liberación del orificio de extracción (15), el dispositivo (3) comprende un producto cosmético dispuesto en el envoltorio (7)； y la válvula (17) comprende: - un obturador (53) previsto para obturar el orificio de extracción (15), - un alma (55) unida al obturador (53) e insert
