Fair-skinned people might burn in less than 15 minutes. Apply a sunscreen with an SPF of at least 15. Use sunscreen if you work outdoors and remember to protect sensitive areas like the nose and the rims of the ears. Sunscreen prevents sunburn and some of the sun's damaging effects on the immune system. Use a lip balm or lip cream containing a sunscreen.
Lip balms can help protect some people from getting cold sores.
High A UV Index reading of 7 to 9 means high risk of harm from unprotected sun exposure. Fair-skinned people might burn in less than 10 minutes. Minimize sun exposure during midday hours, from 10 a.m. to 4 p.m. Protect yourself by liberally applying a sunscreen with an SPF of at least 15. Don't forget that water, sand, pavement, and grass reflect UV rays even under a tree, near a building, or beneath a shady umbrella. Wear long-sleeved shirts and trousers made from tightly woven fabrics.