Abstract: The present invention relates to a device for applying a composition for treating keratin fibres, comprising a hydrophobic film-forming polymer and a volatile solvent, and also to a process for treating keratin fibres using such a device. The composition makes it possible to obtain a shampoo-fast coating, leaving the treated fibres individualized, with improved cosmetic feel and added body and volume.

Abstract: A device for applying a haircare product to a lock of hair may include an applicator comprising a container, the containing being configured to hold a quantity of the haircare product. The device may further include a holding member configured to engage with the applicator such that, when the device is moved longitudinally with relation to the lock of hair, the holding member holds the lock of hair in contact with the applicator. The applicator may include an applicator end piece mounted on the container, the end piece comprising an outlet orifice and a moveable closure element. The closure element, in a first position, may close off the outlet orifice and, in a second position, at least partly open the outlet orifice. The closure element may move between the first position and the second position in response to a force exerted on the closure element by insertion of the lock of hair between the holding member and the closure element.