OUAI Medium Shampoo Refill Pouch in Beauty: NA. OUAI Medium Shampoo Refill Pouch in Beauty: NA. Multiple hair concerns? We've got the solution. The Medium Shampoo by OUAI was formulated for medium hair to hydrate and nourish with Babassu and Coconut Oils, strengthen with Biotin, and add shine with Kumquat Extract. Hair is left shiny, silky and flirty so your hair can get over its Middle Child Syndrome.. Ideal for dry, medium hair. Cruelty-free. Free of Formaldehydes, Formaldehyde Releasing Agents, Phthalates, Mineral Oil, Retinyl Palmitate, Oxybenzone, Coal Tar, Hydroquinone, SLS, SLES, Triclocarban and Triclosan. 32 fl oz/ 946 ml. Thoroughly wet hair from roots to ends with lukewarm water. Lather a quarter size amount of shampoo in hands and work into roots and anywhere hair touches the scalp, then rinse. Rinse with cold water to close the hair cuticle and add shine. OUAR-WU95. FG-0131-C-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.