Hair Rituel by Sisley The Blow-Dry Brush N°1A brush ideal for fine, short to medium length hair . The Blow Dry Brush N1 by Sisley Paris has a medium diameter that allows for precise drying and helps smooth frizz around the face and bangs, giving hair shape and volume from the roots. With wild boar bristles for gentle drying. The flexible bristles then provide better hold for easy drying. The result is voluminous, shiny and soft hair. Result: blow drying brush for short to medium length hair