Hairstyling apparatus using steam via the treatment surface and with a comb

Hairstyling apparatus comprising:

• a handheld treatment unit powered electrically by an electrical cord and having two arms configured to form a clamp with two treatment surfaces that are flat and form two heating plates and which face each other and come into contact with each other when the clamp is closed, allowing a lock of hair to be clamped, wherein the handheld treatment unit comprises means of diffusing steam configured to diffuse steam from a first of the two treatment surfaces to the second of the two surfaces, and wherein one of the arms has a comb located upstream or downstream of one of the treatment surfaces of said arm,
• a means of diffused steam confinement between the two treatment surfaces clamped against each other, the means of diffused steam confinement comprising a single confinement space defined by:
• (i) a groove located in a second of the two treatment surfaces;
• and (ii) a furrow located in the first of the two treatment surfaces and which faces the groove, wherein the furrow comprises the means of diffusing steam such that steam is diffused from a bottom surface of the furrow toward the groove when the clamp is closed, and
• a steam blocking component positioned on only one arm of the handheld treatment unit, the steam blocking component projecting out from only the first arm that comprises the means of diffusing steam and which is configured to block steam escaping from the means of diffused steam confinement in a direction of a proximal part of the clamp which is configured for manipulating the handheld treatment unit, and
• a means of steam generation comprising a steam generation chamber with a heating device, a temperature measurement device, and a reservoir of liquid, wherein the means of steam generation is located in the first arm below the treatment surface,
• wherein the furrow and the groove form a cylindrical space when the clamp is in a closed position and a perforated roller is mounted to rotate inside of the cylindrical space.