Tonic shampoo for thick hairCancel your blowout appointment because you don't need it anymore! With valuable ingredients, the Thick Shampoo from OUAI strengths and soothes thick hair and counteracts frizz effectively. With marshmallow root, a natural softener from Africa, the formula helps to untangle the hair and make it more supple. Shea butter provides valuable moisture and protects the hair from drying out, while avocado oil envelops each strand and prevents hair breakage. In addition, hydrolyzed keratin fills the gaps in the natural keratin of the hair follicles and helps to smooth the hair. The result is a strong hair that feels healthy and silky-soft.