Matrix Opti. Care Smooth and Straight is a professional hair-care line formulated to help control and smooth chemically straightened hair. This formula is enriched with Shea Butter to help, protect, condition and moisturise for healthy looking, silky shiny hair. This conditioner detangles hair as it moisturises and provides intense smoothness and shine for frizz-free hair. Hair remain protected against damage and helps prevent split ends. Biolage harnesses the power of botanicals to nourish, restore and bring out hair's natural beauty. Targeted concentrated formulas combined with quality.