Wash hair with clarifying shampoo 2 times. Do not dry your hair. Applay the product evenly, half centimeter from the root to tip; dry your hair with a hairdryer and hair brush.Proceed to apply the iron to seal the cuticle. Let it work for 15 to 30 minutes, depending on the results you wish to achieve. Wash hair using Sulfate-FREE shampoo. Dry hair with a hairdryer and hair brush. Finally proceed to apply the iron to seal the cuticle.