Trusted by hair stylists for Smooth Straight hair discover our No.1 professional home care range Opti.Care Smooth Straight from Matrix. Specially developed for straightened hair its super caring formulas are the experts favorite choice for smooth and straight professional hair results. The OptiCare conditioner detangles and moisturizes for intense smoothness and shine. Nourishes with Shea butter. Maintains straightened effect of hair for up to 72 washes*.(*Instrumental Test on Straightened hair: Shampoo + Conditioner + Serum & a monthly Opti.Care Hair )