Ive found the best solution for clear skin, especially if you deal with acne issues is to drink a LOT of water, have no sugar at all in your diet, i know that part might be tough, but just drinking water and tea (as opposed to juice or soda) has cleared up my face in weeks
make sure to eat tons of lean protein, salmon and chicken breast and have vegetables be a part of every meal
Great advice @moderninvestor :)