Caution: Be aware that UV reflected off sand or water is not taken into account, which can significantly increase the amount of UV to which you are exposed. Additionally, the UV rays are measured striking a surface horizontal to the ground and does not account for more direct sun exposure that portions of your body may experience while outside. These index values represent burn risk over a short duration (< 1 hour) and DO NOT account for the dangers of prolonged exposure to UV radiation. The readings do not suggest that any amount of exposure is safe or healthful.
UV Index Exposure Category
- 0.0- 0.9 Minimal Sunburn Risk
- 1.0- 2.9 Low Sunburn Risk
- 3.0- 5.9 Moderate Sunburn Risk
- 6.0- 7.9 High Sunburn Risk
- 8.0-10.9 Very High Sunburn Risk
- 11.0+ Extreme Sunburn Risk
Important facts most individuals don’t know
- Sunscreen needs to be applied one half hour before exposure for full skin absorption.
- Waterproof type sunscreen should be applied at least once an hour before going out into the sun.
- Sweating, swimming, and exposure to rain decrease the effect of SPF.
- The FDA recommends reapplying sunscreen every 40-80 minutes.
- 30ml of sunscreen lasts no more than 4 days per person.
- SPF number does not apply to UV-A. So an SPF of 25 or an SPF of 30 with no UV-A screen will be less effective than a product with SPF that contains UV-A screen.
- Insect repellents containing Deet will decrease a product’s SPF by anywhere from 15-30%.
- Always protect your eyes with good quality sunglasses. The risk of cataracts needs to be underscored.
- Certain medications increase one’s risk of sunburn by increasing the photosensitivity of the skin. Caution should be exercised if taking the following medications, although the list is not complete: Anti-malarial medication, diabetes medication, antihistamines, oral contraceptives, estrogen, anti-inflammatories, ibuprofen, phenothiazines, certain antibiotics (specifically the sulfonamides), certain diuretics, tetracyclines (such as Doxycycline), some tricyclic antidepressants, some deodorants and soaps and some herbal medication (such as St. Johnswort) can increase the risk of sunburn).