L'Oréal Professionnel Liss Unlimited Shampoo is an intensive smoothing formula designed for unruly, frizz-prone hair. Infused with Pro-Keratin and Evening Primrose Oil, it purifies the scalp while deeply nourishing the hair to enhance manageability, strength, and softness. This professional-grade shampoo provides up to 4 days* of anti-frizz protection—even in 80% humidity—making it perfect for those seeking long-lasting smoothness and shine. Ideal for thick, rebellious, or treated hair, it maintains hydration and strengthens hair structure with every wash.