A lick-out just before sex should fix the problem. If that's not enough lube then maybe you should use lube, or an all natural massage oil (ie body shop stuff). You really shouldn't use musch else. So don't go grab anything you can find. Alot of moisturisers or oils could be dangerous to your health if left inside you.

Be careful what you choose is right. If using a condom for protection some things not designed to be used as lubes can break down the condom therefore reducing it effectivness.