SPF stands for sun protection factor. Simply put, an SPF rating tells you how long you can stay in the sun without getting burned while wearing that sunscreen, compared with how long you can stay in the sun before you burn without wearing that sunscreen.
What SPF should I use?
Adults of all ages and skin color should use at least an SPF of 30 during all outdoor activities. Children over 6 months old should wear a cream-based sunscreen of at least SPF 30. Additionally, you shouldn’t rely on just sunscreen as a way to avoid the sun’s radiation.
Does SPF 30 really protect you all day?
Both rays can cause both short-term and long-term skin damage, like burns, dark spots, fine lines, melasma, premature aging, and even skin cancer. Sunscreen (of at least SPF 30) can help prevent all that, so long as you slather it on every single day-even if you’re inside all day.
What is the highest SPF available?
It sounds simple enough, but fancy labeling can send your head into a tailspin. We have waterproof, water-resistant, sweat-proof, SPF 15, 20, 30, 60, and even 100. Generally, SPF 100 is the highest protection you can buy, but it’s not necessarily the best protection against a sunburn.
How is SPF determined?
SPF is determined using human experimentation. The test involves fair-skinned volunteers (people who burn most quickly). They apply the product and bake in the sun until they start to fry.
What does SPF mean and what is it good for?
SPF is short for sun protection factor. In sunscreen, SPF helps to block your skin from the sun’s radiation. The sun emits two types of radiation: UVA and UVB rays. UVA rays contribute to the signs of aging in the skin, like wrinkles and sagging.
How much SPF do I really need?
“The American Academy of Dermatology recommends that people use an SPF of at least 30 on both the face and body,” says Dr. Strachan. “Although an SPF of 15 is adequate, in reality most people don’t use enough product to achieve it.
What is the recommended SPF for daily use?
Dermatologists recommend using a sunscreen with an SPF of at least 30, which blocks 97 percent of the sun’s UVB rays. Higher-number SPFs block slightly more of the sun’s UVB rays, but no sunscreen can block 100 percent of the sun’s UVB rays.
How high should your SPF be?
The American Cancer Society recommends that people use a sunscreen with an SPF of at least 15, whereas the American Academy of Dermatology suggests 30. EWG recommends avoiding sunscreens with SPF 50+ or higher. It is more important to apply sunscreen properly than to use one with an ultra-high SPF.