What is SPF?
SPF abbreviates sun protection factor. SPF is a measure of how much UVB light a sunscreen can filter out. Dermatologists recommend using an SPF of at least 30 and call it “the magic number”.
SPF 15 blocks about 93 percent of UVB rays, while SPF 30 blocks about 97 percent of UVB rays. The ADA recommends an SPF of 30 or higher.
It’s important to apply enough sunscreen to any exposed area of skin every day. Dermatologists suggest putting a base coat of SPF 30 all over the body a half hour before leaving the house and then reapplying every two hours on days when you have to stay outdoors for an extended period of time. If you’re swimming, it’s a good rule of thumb to grab sunscreen every time you get out of the water.
Remember, no sunscreen can completely protect you from the sun so it’s important to always reapply throughout the day, wear protective clothing (hats, sun-protective swimwear, clothing, etc.) and always seek shade.
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Dr.Sayyam Azam is certified dermatologist who has specialized in Clinical Dermatology (Pakistan) and Aesthetic Medicine (U.S). During her specialized training, she is involved in multiple clinical as well as aesthetic dermatological procedures such as botox, fillers, chemical peels. As a licensed dermatologist, she is now running a state of art Aesthetic Centre (The Face Clinic) in Multan, Pakistan.
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