If scabs form this is a normal part of the aesthetic treatment. All you have to do is making sure you do not cause or increase any chances of infections on to the treated area, especially while the scab is in the process of forming. You can wash the area normally with water and a non aggressive soap. Just make sure you keep the area clean and while you dry your face you use a very clean towel. You do not want to expose the area to unwanted dust or any particles which could increase chances of infection.
Remember to avoid the use of any make up or other creams during the scabbing process. Do not pick the scabs.