I've been on Benzaclin before, and I remember it made my skin a little more sensitive. Reason being, it has benzoyl peroxide in it (as well as clindamycin), which can be drying. I wouldn't reccommend using a moisturizer with salicylic acid in it, because it's another thing that's supposed to help with acne (therefore it's pretty drying too).

A good mositurizer to look for would be oil-free and non-comedogenic. As well, just becuase a moisturizer is dermatologist tested/recommended, doesn't mean it's an amazing one - that should be taken with a grain of salt. I like the Clinique Dramatically Different Moisturizer, because it's light and sinks in quickly, while moisturizing at the same time. A little goes a long way. I know a lot of people also like Cerave, Eucerin, Neutrogena and Clean & Clear. But different moisturizers work for different people, so just experiment a little and do some research on one that you like. Hope this helps and good luck. (: