What it is: Delivering instant, flexible volume to the roots and lengths of the hair, Session Label Dust It Flex creates a soft, matte effect with stylish rough texture. What it does: Instant flexible volume for roots and lengths, rough effect, soft matt effect and easy wash out. What else you need to know: Perfect for creating the hottest catwalk styles, Session Label Dust It Flex brings session styling performance and premium styling abilities to the comfort of your home.