We are heading to Hawaii and I love to swim and snorkle but my husband gets sunburn very easily. I've tried several different brands of sunblock but haven't had much success in finding a good one. Any suggestions. Thanks
Find a waterproof SPF 30 (any major brand should do). Often these are marked as "sport" . Regardless of the directions, reapply every hour or so and immediately after coming out of the water.
Many fols will wear a tee shirt when snorkelling to help prevent burning on the back. (does not replace the sun screen however).