What is the best face wash to use for extremely bad acne?

Get some help. If you have really bad acne, using just a face wash will do little to help. This type of acne will usually result in scarring and so you should certainly seek the advice and help of your pcp or a dermatologist. There are great treatments for bad acne to avoid scarring and get clear skin. That said, use a salicylic acid containing acne face wash. Good luck.