Alright here's my question: I have moderate to severe acne, and my dermatologist prescribed me Tretinoin Gel 0.025% and Benzoyl Peroxide 5%. Currently, I use the Tretinoin at night, and apply a moisturizer after about 5 minutes. As for the Benzoyl Peroxide, I have to start using it in the mornings before school. Is it truly necessary to use the Benzoyl Peroxide, and then the moisturizer, and then the sunscreen if I'm going to school? or can I just only use the BP and the Moisturizer? I will hardly be in the sun (Except sometimes I walk outside between two classes because I'm in high school. Even then it is only 2 to 3 minutes). Keep in mind that school is from 8:00 AM to 4:00 PM, and every room uses fluorescent lights.