Only your hairdresser can give your rebellious hair the right amount of nourishment and Pro-Keratin, to help discipline your hair for 4 days*. Enriched with Pro-Keratin and Kukui & Evening Primrose Oil, the luscious smoothing hair mask nourishes, smoothes and protects your hair fibers against humidity. Luxuriously bathing your hair in hydration, polishing its surface and providing an effective humidity blocker. For a glossy, frizz-free looking hair result for up to 4 days even with a 80% level of humidity*. Pro-Keratin improves and maintains hydration of the hair, strengthens its structure and leaves it soft and shiny. Kukui nut oil provides a reinforced protection against humidity – acting as a humidity blocker. From Asia, the Kukui nut is pressed from the seeds of the Aleurites Moluccana Tree, which oil contains Omega-6 and Omega-3, two essential fatty acids which cannot be produced by the human body. Kukui nut oil therefor provides a reinforced protection against humidity – acting as a humidity blocker. Optimum and long-lasting results with continued use of the full Liss Unlimited routine to smooth your hair. *Instrumental test n°1: shampoo + masque + thermo-smoothing cream vs. regular shampoo. Instrumental test n°2: double serum.