by Isaac Zefo | May 14, 2024 | Healthy Living Two hours. You’ve just applied sunscreen for a trip out on the kayak and you’ve got two hours before you need to seek shade or reapply it. You’ve struggled with keeping to that timeline in the past, but now that you are experiencing frustrating sun-related symptoms, you are redoubling your efforts to watch the clock more closely, not only for your benefit, but for ...