Preparation is definitely important for getting the best results and minimizing swelling. The main things I've read about are avoiding blood thinners like aspirin and ibuprofen for about a week before your appointment. You want to avoid alcohol for at least twenty-four hours beforehand because it can increase bleeding and swelling. Stay hydrated for several days leading up to the procedure because well-hydrated skin responds better. You should also avoid intense workouts and hot environments for a few days before, as these can increase inflammation. Skip the aggressive facial treatments like peels and microdermabrasion right before too.