Ouai wave spray. Get beach waves without stepping foot in the ocean. The Wave Spray gives hair the perfect amount of texture, body and shine for that effortlessly chic undone look. Great for all hair types. Created with rice protein instead of sea salt, the Wave Spray is safe for all hair types, even if color- or keratin-treated. Lightly mist on damp or dry hair about ten inches from your head to enhance waves and add volume. Ouai means yes. In that casual Parisian way.