You really don't need an extra moisturizer with the sunscreen if you're oily.  Here are 3 options.  One, just use the sunscreen alone.  Two, use the moisturizer you like and put a powder sunscreen like the Colorescience Sunforgettable over it.  Or, if you're really an indoor person, even use the Jane Iredale mineral powder makeup SPF 20.  And three, use a very light gel moisturizer like the Vitamin B5 gel (expensive but lasts a long time) and put your sunscreen over that.  Hope this helps!  Dr I