The best thing I've ever found is called "Finger Care" and I order it over the internet from Canada. I used to be able to buy it locally, but they quit carrying it.
In the winter, my hands dry out something fierce, and I even get those nasty, painful cracks on my fingers. This cream has things in it that if I put a dab on the spot before I go to bed, it will start to seal over and heal by morning. The jars are small, and cost about $6 a piece, but with this stuff, a little goes a long way.
This worked for me when Curel, Eucerin, Bag Balm, Cornhuskers Lotion, etc. didn't do a thing.