Extreme moisturizing bath-what can I use?

I have VERY dry skin. Every shower just dries it out more and lotion doesn't even touch it(especially my legs). I've heard that people with dry skin combat it by taking a nightly moisturizing bath. I have oils but they tend to be too heavy, coating my skin and causing me to break out. What bath moisturizer can I use every day that's not too expensive(since I'll use it quite often) and won't cause me to break out?