Matrix. Specially developed for straightened hair, its super caring formulas are the experts favorite choice for smooth and straight professional hair results. A complete hair care regimen rich in shea butter that deeply nourishes, conditions, protects and tames frizz for up to 72 washes. The shampoo gently cleanses and moisturizes. Nourished with Shea Butter, it softens texture, tames frizz, adds shine and manageability to leave hair silky smooth. Maintains straightened effect of hair for up to 72 washes (Instrumental Test on Straightened hair: Shampoo + Conditioner + Serum & a monthly Opti.Care Hair Treatment). Apply to wet hair and lather with a gentle massaging motion. Rinse.