Both types of rays from the sun, UVA and UVB can do damage to collagen fibers leading to premature aging of the skin AND can damage DNA contributing to skin cancer. UVA rays penetrate deeper into the skin and have the ability to pass through glass and clouds. SPF is an acronym for Sun Protection Factor which only rates the amount of UVB rays that reach the skin. Therefore it is important to use a “Broadspectrum” product for both UVB and UVA protection.
It is recommended that the SPF be a minimum of 15. This allows 1/15th of the sun’s UVB radiation to reach the skin. SPF 30 allows 1/30th of the rays and a 96% UVB protection. It is also recommended to apply sun protection 30 minutes before sun exposure to allow the chemicals to absorb into the skin. Reapplying the product every 2 hours is necessary because the formulas break down in the presence of sunlight within that time.
(Did You Know? Under application of sunscreens is common. Make sure to use enough sunscreen and apply to areas such as the scalp, lower lip, and around the neck. They are common areas for skin cancers.)
All of the sun protection products at our office have both UVA and UVB formulations. Call to make an appointment to see one of our skin care nurses who will clarify which product would be best for you. Also, ask us how to enhance your protection with products that can be paired with sunscreens and sunblocks. The skin care nurses are available Monday through Friday with some evening and Saturday hours.