faqs-sunscreen-edition

FAQs: Sunscreen Edition

Wearing sunscreen is one of the best and easiest ways to protect your skin’s appearance and health at any age. Used regularly, sunscreen helps prevent sunburn, skin cancer, and premature aging.

Q. What is SPF?
A. Sun protection factor (SPF) represents a sunscreen’s ability to protect against a specific portion of ultraviolet (UV) light called UVB. UVB rays are responsible for sunburns and skin cancer. There are two other portions of UV light: UVC rays (which don’t pass the earth’s atmosphere) and UVA rays (which are also responsible for skin cancer as well as skin aging). A sunscreen that is broad spectrum will protect against both UVB and UVA rays.
Q. What sunscreen should I buy?
A. For day-to-day use, pick a sunscreen with an SPF of at least 30. If you spend time outdoors, choose a product with SPF 60 or greater. In reality, most people do not use as much sunscreen as they should, and this higher SPF helps compensate for the reduced application.
Q. How much sunscreen do I need?
A. To protect your face, neck, arms, and legs, you’ll need about 1 ounce of sunscreen. Squeezed into your hand, 1 ounce of sunscreen is enough to completely cover your palm. To protect your face and neck, you’ll need about a half teaspoon.
Q. Should sunscreen come before or after other products?
A. So long as the sunscreen is at least SPF 30, water-resistant, and broad-spectrum, it doesn’t matter in what order you apply your skin care products. Some people find it’s easiest to work with bare skin before makeup or moisturizer have been added.
Q. Does makeup with SPF work?
A. Makeup is not enough to protect your skin — even if it has a high SPF. You would need much more makeup than you typically use to reach the labeled SPF.
Q. Do I need to reapply sunscreen throughout the day?
A. Generally, sunscreen should be reapplied every two hours, especially after swimming or sweating.
If you work indoors and sit away from windows, you may not need a second application. Be mindful of how often you step outside, though. Keep a spare bottle of sunscreen at your desk just to be safe. Even a short stroll at lunch could put your skin at risk.
Keep in mind that no sunscreen is perfect. Wear wide-brimmed hats, sunglasses, or other protective clothing, and seek shade whenever possible.
Q. Will using sunscreen limit the amount of vitamin D I get?
A. Using sun protection may decrease your skin’s production of vitamin D. However, the AAD recommends that healthy adults should obtain an adequate amount of Vitamin D from a diet that includes foods naturally rich in vitamin D and/or foods/beverages fortified with vitamin D. This approach gives you the vitamin D you need without increasing your risk for skin cancer.