How to use Sunscreen Or What is SPF ?
- FYI,gasm
- May 22, 2019
- 3 min read
So we all heard about Sunscreen and SPF to this two things protect your skin from heavy UV sun rays before start we answer your all question . #SUNSCREEN #SPF #SUMMERS
What SPF do dermatologists recommend?
“We recommend SPF 30 and up to all of our patients,” says Dr. David Lortscher, board-certified dermatologist and CEO of Curelogy . “But remember, sunscreen isn't a complete block — no matter what the SPF is!” Dermatologists also recommend taking advantage of clothing, hats, sunglasses, and shady spots (especially between peak UV exposure hours of 10 a.m. and 4 p.m.). Make sure to look for a water-resistant, broad spectrum formula, along with an SPF of 30 or higher: The term “broad spectrum” means the sunscreen protects against both harmful UVA/UVB rays.
How do I apply sunscreen, and how much sunscreen should I use?
For the best protection, apply sunscreen liberally on all exposed areas 30 minutes before going outdoors. "Liberally" here means a shot glass-full for the body, a nickel-size dollop for the face, Don't stop there: Layer on a second coat “to help cover spots you missed the first time,”Slather SPF all over before you dress to ensure full coverage and avoid those painful slivers of sunburns that always seem to crop up along the edges of your swimsuit.
What sunscreen SPF is the strongest?
While you may have heard that boosted SPF numbers are just marketing jargon and that the FDA is considering capping SPF at 60, you really should not rely only on a low SPF 15. “SPF 30 filters 96.7% of UV rays, meaning it allows 3.3% to reach skin, while SPF 60 filters 98.3%, allowing 1.7% through,” explains Dr. Wang. “So SPF 30 actually lets twice as much UV reach skin as SPF 60.”
More reason to go high: “Our tests have shown that people apply about one-third the amount of sunscreen necessary to achieve the SPF listed on the label,” Aral says. “We recommend using at least broad-spectrum SPF 50 to compensate.” But high SPF numbers can give a false sense of security, so remember to reapply at least every two hours.
How long does SPF last?
SPF can stand up to water and sweat, but only for a certain amount of time. While the FDA previously allowed sunscreens to be labeled water- and sweat-proof, regulations now mandate they can be labeled only water- and sweat-resistant for up to 40 or 80 minutes. That's because no sunscreen is completely impervious to water and sweat, just as no sunscreen can totally “block” the sun’s rays. "Sweat-resistant" labeling means the formula maintained its SPF level on testers’ skin in a water bath for the indicated time, Dr. Wang says; beyond that time frame, it should be reapplied
Do I really need to wear sunscreen in the shade?
Yes, and you should wear sunscreen every single day of the year, too. One study found that 78% of people who used only an umbrella on a sunny beach day burned, versus 25% of those who used only SPF, likely because shade doesn’t block UV light from all angles. Your best bet is tripling up, says Aral: “Apply sunscreen, stay in the shade, and wear sun-protective clothing and sunglasses.”
Should I use a natural sunscreen?
“There’s no such thing as a truly ‘natural sunscreen," says Dr. Wang, "because the ingredients need to be treated in chemical processes when added to formulas to prevent harmful reactions.” Since there’s really no clear definition of the word “natural” for personal care products, you’re likely thinking of the chemical versus physical sunscreens.
Sunscreens in both the chemical and physical families have been proven safe and effective. Chemical formulas absorb UV light so it can’t penetrate your skin, while physical sunblocks contain only the mineral actives titanium dioxide and zinc oxide, which immediately act as a barrier for your skin, reflecting or “bouncing” sunlight away. But be aware that these physical sunscreens are also the types that can leave a white cast on your skin.
Do I need a different sunscreen for my face?
According to our Beauty Lab pros, SPF is SPF, so from a protection perspective, one product can do it all. But sunscreen for your body can feel too greasy or heavy on the face, so if you have oily skin, you might want to consider products that are specially formulated for your face. These face moisturizer with SPF contain other goodies like antioxidants that address specific facial skincare concerns like hydration, age spots, and fine lines and wrinkles.
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