Curl Press the convert button to the perm & curl hair, clip in the hair, and then begun to curl & prem. Than no motion for a while. The have curled hairstyle. Straight Press the convert button to the curl straight hair. Slide to pull straight.The have straight hair style. 2 in 1 hair beauty set: curl & straight Curl: Use hairpin-clip the hair, through the marcel Device scroll in all the hair, slightly refrain from a little of scalp pain, You can burn up to a satisfactory hair. Straight: Clip the hair into both sides, slightly refrain the little pain from scalp, you can arbitrarily make shape.