I work outside a lot, and the laser place says if I get tan I'll void my warranty. It's going to happen, but I'm also taking this as a chance to get serious about using sunblock.
After a bit of googling, I found that the FDA hasn't approved a new sunscreen ingredient since, 1999 (if i remember right), and that sunscreens from canada/europe have ingredients that work better. Dermatologists created some group to try and change this, but as it is, it's business as usual. The ingredients that is not yet FDA approved are/is known as "Mexoryls".
I'm should be able to acquire some euro sunscreen soon, and will do a split-face demonstration. I created this post to let folks know about this, as it is very important that we take care of our skin. I'm not 100% on the facts, but I feel that some of the common medications we take could cause sensitivity.
Regardless of what ingredients work best, those of us in the Northern Hemisphere should remember the sunblock this summer!