The kerastase boucles dart mousse will help you achieve beautifully defined curls that stay bouncy all day a unique water to mousse formula the boucles dart curl defining mousse is formulated with xylose vitamin e and hold enhancing agents which work together to combat frizz protect against humidity and keep curls soft shiny and naturally defined the perfect multi tasker the curl defining mousse will also protect hair from heat and uv rays helping you to keep your hair looking healt