Wella SP Smoothen Shampoo perfectly controls and cares for unruly and curly hair. It smoothes the hair structure as you cleanse to leave your hair smooth and supple. An essential component of the SP Smoothen line, Wella SP Smoothen Shampoo is formulated with an Active Cashmere Complex to perfectly control and care for unruly and coarse hair giving it a delightful suppleness as well as providing anti-frizz protection.