A packaging and applicator device for at least one solid cosmetic composition for application to the eyelashes, the eyebrows, or the hair includes a handle member, a stem connected to the handle member and an applicator member connected to the stem. The applicator member has a core secured to the stem, and applicator elements extending transversely to an axis of the stem from a base secured to the stem to an end opposite to said base, at least some of the applicator elements having their bases disposed inside a solid block of said composition, said block presenting an outer envelope extending part or all of the way around the axis, and situated, prior to first use of the device, between the bases and the opposite ends of the applicator elements, at a non-zero distance therefrom. The composition is dispersible while dry, with or without assistance from heat.