If using shaving cream, switch to one for sensitive skin. A friend turned me onto using Venus shavers for shaving my head, use it on my balls too. Get over using a "women's" razor--has multiple blades and nice lotion pad. Rinse very well. Use a nice non-alcohol lotion--watch out for ones with some sort of acid too. Suppose to be good for rejuvenation, but I am allergic too it, so I am sure would do horrors to my ball sack.
Good luck, smooth balls are fun to play with!