Vidal Sassoon Answers For Coarse Hair - 1" Solid Ceramic Straightener with Ceramic Heater. Solid ceramic plates distribute heat evenly through hair for a sleek, smooth look without frizz. Ceramic heater provides an intense heat that tames even the hardest to style hair. Multiple heat settings. 30-second fast heat-up. Instant heat recovery. Auto shut-off for added peace of mind. Answers for Coarse Hair! Coarse hair has a thick diameter with a surface that feels rough to the touch. It can be dry, hard to control and difficult to manage with a "mind of its own". Styling tools that smooth the outer layer of hair and provide high heat to reduce frizz are essential for coarse hair.