Redken's Extreme Length range strengthens lengths and prevents 81% of damage. Restorative formulas are suitable for long hair prone damages caused by heat, coloring and lightening. The shampoo gently cleanses while strengthening the hair with the formula featuring biotin. Fortifying shampoo Gently cleanses Formulated with biotin Prevents damage Encourages length retention HOW TO USE Use as a complete system with Extreme Length conditioner and leave-in treatment. Apply to wet hair, massage into lather and rinse. Follow with Extreme Length conditioner and leave-in treatment. In case of contact with eyes, rinse them immediately.