Shu Uemura Art of Hair Shusu Sleek range is designed to smooth and nourish unmanageable and frizzy hair for a satin-soft, shiny finish. The range is developed with density reduction to reduce drying time and leave hair with a controlled, fluid touch. Shu Uemura Art of Hair Shusu Sleek Treatment is a deeply conditioning haircare treatment that replenishes moisture to unruly, tangled hair for a satin-soft, shiny finish. Enriched with Black Cumin Oil and antioxidant-rich Nigellone to intensely nourish and hydrate, and a rich blend of omegas 3, 6 and 9 and essential fatty acids to reduce density of hair fibre for a sleek and manageable result.