A packaging and application device for a cosmetic product. The device may include a platform, a tube forming a housing for the product and a driving mechanism for translational movement of the platform in the tube. The movement of the platform allows dispensing of product via a dispensing opening in the tube. A side wall of the tube includes an inner cross-section having an inwards-concave portion and an inwards-convex portion. The tube is arranged in a base having an outwards-convex outer cross-section.