The present invention relates to an internal nose-dilating device, comprising two conical inserts, which each have four walls and two openings: a small opening, which during use is oriented inwards towards the nasal cavity, and a large opening, which is oriented out from the nose, the inserts being connected by means of a connecting member, which during use is the only part that remains on the outside of the nose. The four walls of the inserts are convex at their central portions and provided with a substantially horizontal recess, the recess being arranged along the four walls of the inserts and extending at least partly along the circumference on the outside thereof to form a bulge in the four walls of the inserts. The inserts have at least four apertures and a reinforced portion, which is provided along a rounded edge of the small opening, thereby allowing the inserts to be turned inside out.