Aside from face washes, benzoyl peroxide is sold as an OTC topical cream and can be found in products like toners and treatment pads. Since most acne treatments dry the skin to some extent, you may want to start with once-daily use of a benzoyl peroxide face wash and only increase use and/or add on other acne products if and as your skin can tolerate it.
This article highlights four widely available, inexpensive face washes that contain benzoyl peroxide.
This is a great cleanser to help reduce oily shine. It can dry your skin, though, so make sure you use an oil-free moisturizer every day.