A professional treatment that provides intensive hair smoothing, frizz control and easier styling. Thanks to innovative technology, it actively controls hair fibers at their roots, providing an impressive smoothing effect and long-lasting frizz control. Thanks to innovative technology, the product actively conditions the hair fiber, giving it intense shine and exceptional softness. The results are visible after the first use – hair gains 77% more shine¹ and is 5 times smoother¹. When used in combination with other products in the range, it provides 2 weeks of permanent smoothness and damage control, visibly changing the appearance of hair². It is a key care product that reduces daily styling time by half² and makes hair perfectly smooth. ¹ Instrumental test after using the treatment. ² Instrumental test after 4 uses of a routine consisting of Keratin Alpha Sleek shampoo, treatment and serum.