A short time outdoors and suddenly cheeks and shoulders are bright red. Children’s skin tends to be sensitive to ultraviolet (UV) rays, so everyday protection habits matter.
Why It Happens
Sunburn happens when UV rays damage skin cells and the body responds with inflammation, causing redness and pain. The CDC notes that UV rays are strongest around midday and advises protecting skin whenever the local UV index is 3 or higher. Children’s skin is thinner than an adult’s, and sunburns in childhood are linked to a higher chance of skin cancer later in life. Children with fair skin, freckles, or light hair tend to redden more easily. UV also reaches the skin on cloudy days and reflects off water and sand.
How It Differs by Age
HealthyChildren.org, the AAP’s parent site, advises keeping babies under 6 months out of direct sunlight, using shade from a tree, umbrella, or stroller canopy, and dressing them in lightweight long sleeves, long pants, and a brimmed hat that shades the neck. When shade and clothing are not enough, a minimal amount of sunscreen with at least SPF 15 may be applied to small areas such as the face and backs of the hands. The CDC says sunscreen is not recommended for babies 6 months and younger, so both sources treat sunscreen as a last resort for this group. After 6 months, sunscreen can be part of daily routines, though clothing, hats, and shade remain the first line of defense.
Care at Home
The CDC recommends broad-spectrum sunscreen that filters both UVA and UVB rays, with SPF 15 or higher, applied before going outside and reapplied after swimming, sweating, or toweling off. Reapplying about every 2 hours is the usual guidance. Applying it roughly 30 minutes before heading out gives it time to work. Tightly woven fabrics protect best, and darker colors may block more UV than lighter ones. A wide-brimmed hat that shades the face, ears, and back of the neck is better than a baseball cap, which leaves the ears and neck exposed. Sunglasses that block UVA and UVB help protect the eyes. Plan indoor or shaded play around midday. If skin is already pink, cool compresses and extra fluids can help.
Common Misunderstandings
Some parents think clouds block UV, but a good deal passes through. Others rely on sunscreen alone, whereas the CDC says it works best combined with protective clothing and hats. Another myth is that one application lasts all day; water and sweat wear it off. Some believe a tan means healthy skin, yet tanning is also a sign of skin damage. And for babies under 6 months, sunscreen alone is not a reason to stay out long, because shade and clothing come first.
When to Seek Medical Care
Large blisters over a wide area, severe pain, chills, high fever, vomiting, or dizziness after sun exposure call for prompt medical attention. If a child is limp or hard to wake, has a dry mouth, cries without tears, or has no urine for 8 hours or more, suspect dehydration or heat illness and go to the emergency room right away. A baby under 1 year who has reddened from the sun should be checked by a pediatrician right away. Even without these signs, check in if redness lasts several days or the skin starts to ooze. This information is based on U.S. (AAP/CDC) guidance; if you live elsewhere, check with a local pediatrician for country-specific recommendations. This information isn’t a diagnostic tool and doesn’t replace advice from a medical professional.