What is the best face wash in department stores you can buy for acne and/or black heads?

Benzoyl peroxide : Benzoyl peroxide face wash is over the counter and can be bought in drug stores and places like wal mart and target. It comes in different percentages. I suggest starting with 5% as it can be really drying. It is really the first place to start in fighting acne. You might need to add a retinol. Some are over the counter but might be less expensive if you visit the doctor and get a prescription.