Redken One United is a multipurpose spray that includes 25 benefits to increase manageability, protection and beauty, making it the ultimate lotion spray. Redken One United is a multi-benefit spray to give hair increased manageability, protection, and beauty. It can be used as a leave-in spray to condition, nourish, reduce dryess, and detangle to make hair stronger and healthier. Prime your hair before hot styling to prevent heat damage, split ends, and color fade. Help give hair a silky touch to help smooth, control frizz and add a luxurious shine to the hair. Can be used multiple ways. For use with a rinse-out treatment, apply after cleansing and before the treatment. For use with a leave-in treatment, spray directly onto hair after cleansing. For use alone, apply after cleansing to refresh hair between washes. For use with a styling product, apply before or after styling.