Rexten Sustainer comprises highly substantive particles performing Enzyme alike affinity to hair and the followings: Forming outer layer to protect and insulate complete hair fibre from roots to ends against damaging environmental sources as humidity, salty water and UV rays, providing anti-dryness protection under heat and making it elastic. Knitting hair fibre back to hydrophobic state implementing Lotus Effect of minimizing water & dirt adhesion. Sustaining and prolonging soft smoothing texture. Sustaining shiny, soft, smooth and elastic hair. Speeding up drying time. Taming and Controlling Frizz. Detangling and reducing friction between hair strands for freedom of movement and improving combability..