Dr. Andrea Mertz, MD, Pediatrician
How do you go about picking a sunscreen? Reading the label can feel like learning a foreign language. What does it all mean?
SPF (Sun Protection Factor)
The American Academy of Dermatology recommends SPF 30 or higher. SPF is determined by dividing the amount of time it takes to have a sunburn on skin with sunscreen by the time it takes to get a sunburn on skin without sunscreen. SPF only estimates protection against one type of UV rays (UVB).
Broad Spectrum
Always buy sunscreen labeled Broad Spectrum. Only sunscreens labeled Broad Spectrum protect against both types of UV rays (both UVA and UVB).
Sunscreen Ingredients
Barrier sunscreens are best. Look for zinc oxide and titanium dioxide on the label.
- You may have white color on skin after applying
- Avoid sunscreens with oxybenzone because it has some mild hormonal properties
Reapply, Reapply Reapply!
- Always reapply sunscreen every 2-3 hours, more often if swimming or in water
- Always use adequate amounts of sunscreen. The average adult should use about 1 oz per full body application
- For infants older than 6 months, slather it on. For infants less than 6 months old, use a small amount on exposed areas only (hands, nose, face)
Photoprotective Clothing
Use Photoprotective clothing, including shirts, hats, blankets, and shorts. They are great for babies and children of all ages (great protection for infants less than 6 months). This clothing is measured with UPF (ultraviolet protective factor):
- Good: UPF 15-24
- Very Good: UPF 25-39
- Excellent: UPF 40-50
Sun Safety Reminders
- Avoid peak sun exposure. Sstay indoors as much as possible between 10 am and 4 pm
- Keep infants younger than 6 months old in the shade as much as possible
- Reapply sunscreen frequently!
- Stay hydrated – make sure you and your child are drinking plenty of water