Plan a Safe Outdoor Activity
Read Your Results
After entering your activity details, SunUp calculates and displays your personalized safety plan. You will see: Your safe exposure time (how long you can be outside before needing to seek shade or reapply). Your recommended SPF for this specific UV level and duration. Your reapplication interval (how often to reapply sunscreen during the activity). Risk flags (altitude exposure, peak UV window, reflective surfaces). Gear recommendations (hat type, clothing coverage, sunglasses). 3-5 smart tips specific to your activity and conditions.
Try it in the app:
Read through each section of your results. Pay special attention to the reapplication interval — this is where most people lose protection mid-activity.
Pro tip:
Waterproof sunscreen still needs reapplication every 80 minutes when swimming or sweating heavily, regardless of SPF rating.