Specially formulated with Soy Protein & Biotin to help seal, strengthen and reduce the look of split ends. The Extreme Length system is perfect for anyone who wishes to grow their hair (even while colouring or bleaching!), especially those with naturally fragile or damaged and prone to breakage hair, who feel like their hair never grows past a certain length. Contains Biotin to help strengthen the hair causing less breakage and allowing the hair to grow longer. This sealer also helps prevent and reduce the look of split ends!