We use the "No Ad" brand of sunscreen which we get in "de ilons." Doesn't wash off in the water and is highly effective. You may not of heard of it because the company doesn't advertise, hence the name No Ad. We've been using it for years and years and have never gotten a sunburn. Try it, you'll like it... <img src="http://www.traveltalkonline.com/forums/images/graemlins/Grin.gif" alt="" />