I have the same problem, and I absolutely love this product. I carry it in my purse, and it doesn't leak. I've had the same tube for about two years. When I'm riding along in the car with my husband driving, I use it then. I rub it into my cuticles and my nails, and it helps. If you use it regularly, I'm betting you'll notice a difference.
http://www.sephora.com/browse/produc...categoryId=B70
Another less convenient, but cheaper, product that I keep at home is this:
http://www.amazon.com/Creative-Nail-.../dp/B0002QB1SC
I keep bottles of this at home because I'm afraid they'll leak in my purse. They're great too.