Wella Professionals SP Smoothen, 1000 ml, Hair Conditioners for Women, The Wella Professionals SP Smoothen conditioner makes your hair easy to detangle and nourishes it, something all healthy, beautiful hair needs. Characteristics: smooths and acts against frizz provides the necessary hydration improves the structure of the hair How to use: Apply after first washing with shampoo. Leave to act for a while, then rinse thoroughly.