Re: doctors are dumb i swear
If you don't pick or try to pop your pimples they will be less red and heal faster. If you use a drying agent like witch hazel it usually helps to speed up the process as well. Once the infection clears (big or small) try using moisturizers on your face and DO NOT PICK AT THE RED SPOTS. Even if you do everything right acne is kind of a process and it takes time. My suggestion (from experience) is witch hazel, moisturizer, and time. You just have to have patience.
Also, if you only have a few pimples now and then Retin A should work well as a spot treatment. But if you are using it I can't stress enough how important moisturizers are. How old are you anyway?