OUAI Thick & Full Supplements in Beauty: NA. A vegan, daily supplement that supports healthy hair with beauty-boosting ingredients like biotin and pea shoot extract that promote thicker, fuller looking hair.. Pea sprout extract supports less shedding & helps to restore hair vitality.. Biotin helps support hair strength.. Vegan & cruelty-free. 30 capsules. Take 1 capsule daily with water and food.. OUAR-WU125. FG-0504-A-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.