Product Overview Treat thick, coarse hair to this ghd Straight & Smooth Spray. Its high concentration of active ingredients promote a sleek, straight finish in thick or rebellious hair whilst protecting from heat damage. For the best results we recommend using 4-6 sprays on damp hair before blow-drying or onto dry hair before styling for beautiful sleekness. Benefits Perfect for thick & coarse hair, this spray helps control & de-frizz hair when blow-drying. It also contains the innovative ghd Heat Protect System.