Yep, having sex could ward off pimples! "Having sex reduces hormone levels, which can help with breakouts," said Dr. Goldfaden. Plus, birth control can keep your skin clear, too. "If you are prone to acne or rosacea, birth control pills are usually helpful and may help decrease acne flares," adds dermatologist, Diane S. Berson, M.D., FAAD, Weill Medical College of Cornell University-NY Presbyterian Hospital in New York. The progestin and estrogen in birth control can help lower the hormones in your body that exacerbate acne.