While your choice of sunblock is largely personal and based on your own preferences (and while even I will very occasionally use a product with a chemical screen), there is lots of emerging research to suggest that chemical sunscreens can have negative effects not only on your body, but also on the environment.
Special shoutout to my kids for taking what started off as pink eye and mixin’ it all up with some good stuff so that when it finally landed on me, it’s some sort of viral punch bowl consisting of postnasal drip, raging cough, pounding headache and a weird back pain thingy. Oh, and bronchitis.