I've had good luck with Aveeno moisturizer, and I also use Oil of Olay sensitive skin, fragrance-free formula with success, too. Both are non-comedogenic, which is what I need. I use that Proactiv system benzoyl peroxide lotion and cleanser to battle breakouts, and they always include a little tube of oil-free moisturizer in the packages, but it doesn't seem to be a particularly hydrating moisturizer.

I only use moisturizer during the dryest winter months. My skin is like an oil slick in its natural state. The dermatologist tells me I will likely be wrinkle-free for many years to come, but I'm going to still be battling breakouts when I'm in my 80s.

I read that olive oil is a good one to try because it has fairly low comedogenic properties. And a friend of mine with very dry skin uses almond oil, which is supposed to be the same way.