Thermal brush Ø 30 mm - Double height nylon / natural bristles.For all hair types. Ideal for thick hair.ensures perfect hold of the strandssmoothes the hair and keeps it healthy and shinyTo achieve optimal styling, repeatedly direct the heat of the hair dryer at the strand from an appropriate distance, keeping it under tension from the hairline. For longer hold, allow the brush to cool while curling the hair. If you want less volume at the roots, loosen the brush halfway and let the ends cool rolled up.