In many cases of acne in females, the pill can be an effective treatment. If your acne tends to flare with your period cycles, you may want to consider the following types of oral contraceptive pills- Diane, Brenda, Estelle, Yaz, or Yasmin. It may take up to 3 months before you notice maximal anti-acne effects on the pill.
Discuss with your GP the safety profile of the pill and how it can reduce your acne outbreaks. Other forms of contraception such as the Depo injection can worsen acne.
More on hormonal treatments for acne