| 单词 | sun protection factor |
| 例句 | The SPF, or sun protection factor, tells people how effective a sunscreen is at blocking ultraviolet B rays, the kind that cause five-alarm sunburns. Skin Deep: The Long Wait for More-Effective Sunscreen Labels 2010-06-23T22:54:00Z Chemical sunscreen also allows for a higher SPF, or sun protection factor, which is a measure of how much UV radiation is needed to cause a sunburn on sunscreen-coated skin versus unprotected skin. What Are the Best and Safest Sunscreens? 2023-09-06T04:00:00Z Dermatologists recommend using a minimum sun protection factor of 30. Is Makeup Messing Up My Sunscreen? 2022-07-05T04:00:00Z In a 1997 study, researchers instructed nine healthy people to apply sunscreen with a sun protection factor of at least 15 on their forearms, using the amount they would normally use. Some studies raise concerns about sunscreen chemicals. But if you dig deeper, evidence is still lacking, experts say. 2020-05-15T04:00:00Z “We always say a sun screen with a sun protection factor, also known as SPF, of 30 is strong enough,” Khushalani said. Pale is the new tan, dermatologist tells patients 2017-09-22T04:00:00Z "People who spend more than 15 minutes in the sun on any given day, should apply sun protection factor 15 or higher." Suntans on children 'are not healthy' - BBC News 2017-06-27T04:00:00Z Bronx plumber Ruben Rodriguez says he used the sunscreen at Orchard Beach and found it to be just right, saying the sun protection factor was “not too high, not too low.” New York City provides free 30 SPF sunscreen to beachgoers 2017-06-16T04:00:00Z Half used only a beach umbrella, and half used only sunscreen with a sun protection factor, or S.P.F., of 100. Hitting the Beach? An Umbrella Is Not Enough 2017-01-19T05:00:00Z In any case, self-tanning products are not a substitute for sun blockers, because their sun protection factor, or S.P.F., is minimal and short-lived. Spray-On Tanning, Considered 2016-10-24T04:00:00Z The sun protection factor offers guidance on a cream's protection against UVB rays, while a star system indicates the level of protection against UVA rays. How do you get to sleep in hot weather? - BBC News 2016-07-20T04:00:00Z The level of protection against UVB rays is measured by something called SPF, or sun protection factor. Sunscreen doesn’t work as well as it says: What to do? 2016-07-01T04:00:00Z The rating, which stands for sun protection factor, is meant to reflect how well a product protects against sunburn, which should also reduce the risk of skin cancer and sun-induced skin aging. With Summer Sun Come Signs of Danger 2015-06-29T04:00:00Z And it does count for a lot: the sun protection factor measures a sunscreen’s ability to filter UVB rays, which are related to sunburn and skin cancer. This Is the Only Sunscreen Article You Need to Read 2015-06-17T04:00:00Z She also believes that many people need reminding of what a "SPF," or sun protection factor, means. Many Consumers Don't Understand Sunscreen Labels, Study Finds 2015-06-17T04:00:00Z The agency also proposed limiting the maximum sun protection factor on labels to "50+," saying data didn't support claims that higher SPF offer greater protection. Why the newest sunscreens still haven’t hit the U.S. market 2015-05-11T04:00:00Z Use a broad-spectrum sunscreen with a sun protection factor of 30 or higher, and apply to all exposed skin, including the ears and hair parts, he recommended. Athletes Need to Guard Against Skin Woes 2015-03-24T04:00:00Z But there’s another major concern: Until recently, many sunscreens with a high sun protection factor, or SPF, were designed primarily to protect people from ultraviolet B rays, the main cause of sunburn. Well: The New Rules for Sunscreen 2013-05-27T19:31:43Z Most people use it in a way that provides a sun protection factor of less than 10. Consumer Reports: Quiz reveals facts and myths about skin cancer 2011-08-22T22:25:41Z The sun protection factor will also be capped at SPF 50. New sunscreen regulations fall short 2011-06-20T15:35:04Z The key takeaway for consumers: Look for a sun protection factor, or SPF, of 15 and above that also says "broad spectrum." New rules to cut confusion on sunscreen claims 2011-06-15T03:16:05Z SPF, or sun protection factor, refers to a product’s ability to deflect UVB rays that cause sunburn. Sunscreen Makers Face New Test for Cancer-Protection Claims 2011-06-14T13:38:03Z Shelves that had been stocked with bottles claiming SPF, or sun protection factor, ratings of 30 now have products that trumpet SPF ratings of 55, 70, even 110-plus. Do sunscreens give a false sense of security? 2010-06-19T01:09:00Z By way of comparison to suntan lotion, the umbrella will provide a sun protection factor of 1.2 million. About New York: James Webb Telescope Takes Baby Pictures of Universe 2010-06-02T01:27:00Z Holman says it is not clear there's an accurate test to prove sun protection factor above 50. Sunscreen changes expected, but not before summer 2010-05-27T16:30:00Z |
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