I went to the dermo 12/14/10 for my acne. I was prescribed Clindamycin phosphate topical lotion 1% and benzyol peroxide 5% lotion for every morning and then the Clindamycin again at night but with Tretinoin 0.05% cream. I've did the night treament ever since the day after my appt and the morning one for two days now this morning after using it my face became really red and it stings SO badly, and still does. I don't know if I should be concered or if this is normal? Help please