According to a new study funded by Johnson & Johnson, beach umbrellas provide almost no protection from the sun's dangerous ultra-violet rays. Scientists say that just because you feel cooler in the shade doesn't mean you’re actually out of reach of the sun's harmful rays. An excerpt from the study says, "Humans in the shade can see when visible light is reduced, and we can feel cooler when infrared light is reduced but we can’t sense the UV light — that is, until we wake up with a terrible sunburn the next day." Researchers add the study took many factors into account such as the coverage size of the umbrella, its UV transmission properties, time of the day and location.

https://www.allure.com/story/beach-umbrella-no-sun-protection

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