I have tried everything for acne, including dermatologists, medications, face scrubs, etc. Finally, a couple of years ago, I realized that drinking two cups of premium black tea (darjeeling or some earl grey blends with out milk) a day cleared my skin up, minimized my pores and made it look very clear and fresh. Nothing else has worked better.
What I have found that worsens my acne has been refined sugar, coffee, corn syrup, anything fried or with a lot of oil in it and most breads and pastas.