The Moroccanoil ceramic brushes are made using the highest quality materials. Ceramic & ionic technology help to seal the cuticle & 'lock in' moisture, resulting in healthy looking, shiny hair with body. This medium to large sized brush features bristles that produce negatively charged ions which help to repel the water molecules, causing them to evaporate more rapidly. The ceramic surface retains heat from the dryer & disperses it throughout the hair, which speeds up drying process. Ideal for thicker hair types, it helps to give a sleek, smooth finish.