Lock in smoother, straighter hair A lightweight spray for creating straighter, smoother hair while protecting from heat damage. Contains the ghd Heat Protection System. Best for… Creating long-lasting straight hair without frizz or flatness. To use… Apply 4-6 sprays into damp hair before blow-drying, or apply to dry hair before using your styler. Style tip… Refresh your style in-between washes with a spritz of Straight & Smooth Spray before using your styler to straighten.