By Kim Walther, ASA Instructor Working as a boat captain, I see a huge variety of sunscreen brands. It’s always interesting to check out what my sailing school students or charterers bring with them. I like to read what’s on the front, and then look at the back.  It’s absolutely incredible that some brands that we perceive as being very good for us and the environment actually include those poisonous chemicals. I found that out the hard way, when I used a sunscreen that I thought was wonderful and I ended up being poisoned by the ingredients! You can read …