How often you slug depends on you! You can do it once a day if you wanted to. The easiest way to slug is to do it at night. Simply apply a thin layer and go to bed. To get started, you'll want to cleanse before you slug. Then, apply a thin layer of Vaseline while your face is still wet. Remove after a few hours (or when you wake up in the morning). Enjoy smoother, more radiant skin. You can slug during the day (it’s kinda like wearing a hydrating mask). Just don’t try to do a full face of makeup on top!