Steam hairstyling device with improved casing

Steam hair styling device comprising:

• two jaws positioned opposite each other, the first jaw comprising a first longitudinal casing housing a first treatment surface, the second jaw comprising a second longitudinal casing housing a second treatment surface, the surfaces being designed to pinch a lock of hair,
• a liquid reservoir,
• at least the first casing comprising means of vaporization for the liquid in fluid communication with the reservoir and means of steam distribution in communication with the means of vaporization, said first casing having an interior surface facing the means of vaporization,
• wherein at least the first casing comprises on an interior surface a first series of projecting lines running parallel to a first axis (X1) and a second series of projecting lines parallel to a second axis (X2) forming a non-zero angle (α) with the first axis (X1), and wherein at least a portion of the second series of projecting lines intersects with at least a portion of the first series of projecting lines to form at least one air compartment.