Hairspray by Ouai, A lightweight holding mist, Shields hair from humidity, With Vitamin E and B5, Free from parabens, Hold bottle 6" from head and spray hair from root to tip, Product measurements: 213g. Ouai believes that good hair starts from within. Thanks to its MD-formulated supplements restoring hair health from the inside, and shampoos, conditioners and styling products that nourish from the outside, effortless-looking hair actually is effortless.