Thanks, everyone, for your support and helpful tips. I have one of my own. I recently discovered that you can make your own zinc oxide sunscreen by mixing zinc oxide powder into your favorite lotion. Yes, it still goes on white, but that can be covered up with powder. By using an oil-free lotion as a base, I can eliminate the breakouts caused by oily zinc oxide sunscreens. Zinc oxide powder has the added benefit of acting as an antiseptic and clearing up my skin. The particles of the brand I use are not small enough to be considered nanoparticles, so I won't have to worry about metal poisoning.