If it's really bad, try accutane, my skin wasn't horrible and I used it and now it's flawless but ask a dermatologist because it's a pretty intense med. if you want just like a spot treatment, try just plain white toothpaste (no gel) or open a liquid Advil and put it on pimple!
okay, so if its red and whatever, annoying and sorta big, put mint toothpaste on overnight. and let it dry than wash off with warm water in the morning. or you can buy CLEARASIL acne wash ( thats what i use now) and it works pretty good (: