Take precautions against sun exposure

HOUSTON, May 5 (UPI) -- Spending time outdoors requires taking precautions against sun damage, a U.S. dermatology expert says.

Dr. Susan Chon of The University of Texas M.D. Anderson Cancer Center in Houston advises a sunscreen with an sun protection factor of 30 is a good choice for most people.

Although 1 ounce of sunscreen is usually considered sufficient to cover exposed areas, reapplications are needed throughout the day, especially as humidity levels increase.

In addition to the sunscreen, Chon recommends taking along a hat with a brim or cap, lip balm, a long-sleeved shirt preferably in sun-protective fabric and sunglasses with ultraviolet protection.

"These are great items to keep handy in your bag to prepare for the sun as it intensifies throughout the day," Chon says in a statement.

Chon advises applying sunscreen at least 30 minutes before going out and reapplying sunscreen and lip balm every two hours.

"Remember, if you are sweating or swimming, you may need to reapply more often," Chon said. "Avoid reflective surfaces such as water, sand, snow and concrete. You can burn from indirect exposure to the sun, too."