Spike 38 Brush A large radial brush designed to create a voluminous blow dry, for thick and curly hair. Evo spike 38mm radial brush is a styling brush for quick, easy blow-drying. Boar bristles help to stretch the hair, while the nylon pins smooth, polish and add shine to the cuticle. What are the features and benefits of Evo spike 38mm radial brush? natural boar bristles stimulate the scalp and reduce frizz nylon pins smooth, polish, and adds shine to the cuticle heat resistant pins to 160 degrees handle pick for easy sectioning made with wood from well-managed forests Who is the Evo spike 38mm radial brush for? A full-bodied blow dry on any hair type. Someone who needs to switch from straight and smooth, or add vibrant volume and bounce. This size is especially great thick, wavy, curly, frizzy hair.