Or Will the Delivery Mechanism Be invalidated by the presence of moisturizer on the skin? I put on moisturizer at about 9 pm. Do I need to wash it off 2 hrs. later to put on RAM. I'd like to use the moisturizer because it has niacinamide as the 2nd ingredient. I'm guessing that's about a 4-5% concentration, and it's the only antioxidant I get. I thank you for your consideration.