Vitamin B11 or salicylic acid is a form of beta hydroxy acid, which is a part of the aspirin family. It is mostly known for the effect on acne reduction by keeping pores clear and exfoliate the skin. You would purchase a variety of vitamin B11 options over the counter in different forms, such as creams, lotions, cleansers, soaps, or pads. They are available in several prescription-strength formulas as well. The substance works especially well for mild acne, including whiteheads and blackheads. Also, it would help prevent other breakouts in the future.