Diffusers are one of those hair tools that you either know and love or you’re totally clueless about what it is or how to use it. Let’s put an end to the guessing game and answer the question at hand: How do you use a diffuser? With the help of two celebrity hairstylists, we’re answering all your diffuser questions once and for all. But before we dive into the step-by-step, here are a few important notes. You want to use the diffuser on wet hair post-shower, and the way you use the diffuser will vary on your hair length. Before you diffuse, apply all of your styling products (heat protectant is highly suggested) directly after you shower or wash your hair. Francis suggests cranking up the heat and turning down the airspeed. Allow the heat to dry the hair instead of a higher airflow. Also, remember, once you start diffusing your hair, avoid touching your hair with your fingers. Trust me, it makes a huge difference in the smoothness of the curl. It’s also important to know your desired end result. If you want your curls to look uniform and more on the tame side, you’ll want to use less motion when drying with the diffuser. If you want va-va-volume, try flipping your head upside down and moving the diffuser up and down in a scrunching motion. This will give you more volume at the roots of the hair. But be warned, the more you flip and scrunch, the larger your hair will be.