OUAI Travel Detox Shampoo in Beauty: NA. OUAI Travel Detox Shampoo in Beauty: NA. This concentrated shampoo with apple cider vinegar will deeply cleanse away dirt, oil, and impurities. It also removes buildup from styling products and hard water deposits. Leaves hair feeling refreshed and super clean.. Suitable for combination, dry, normal, oily, and sensitive skinSuitable for curly, damaged, dry, fine, long, normal, oily, short, and straight hair. Vegan, gluten-free, and cruelty-free. Formulated without parabens, silicone, SLS, and SLES. 3 fl. oz/ 80 ml. Thoroughly wet hair from roots to ends, then squeeze out excess water.. Lather a quarter-size amount in hands, then part hair using fingers and apply as close to the scalp as possible.. Let sit for 1 to 3 minutes, then rinse!. OUAR-WU121. FG-0134-B-00. Founded by hair stylist to the stars Jen Atkin, OUAI - pronounced way - originated HAIRGOALS. The mane addicts at OUAI believe that life is hard and looking good should be easy. That's why their line of luxury shampoos, conditioners, and styling products was designed to nourish hair and bring out its natural beauty - no glam squad necessary.