I wash my face twice a day. In the morning with a cleanser and at night with the same cleanser then I apply Differin. I have been doing this for about six weeks, and every morning I wake up with whiteheads. WHY?

The build up of oil and dead skin cells causes whiteheads. Some dermatologists prescribe Differin gel to reduce whiteheads, but apparently it isn't working for you. I recommend using a deep facial cleanser to help disolve the oils and debries on your skin. Also try using a facial scrub once or twice per week to exfloiate the dead skin cells. If you don't see any inprovement, please make an appointment to see your dermetologist. She/he may prescribe Retin-A or other treatments to help prevent and clear up the whiteheads.