It turns out, most people do not use enough cream to make it necessary. And the consequences can be more serious than you think.
Ask all the beauty experts and dermatologists in the world what the first thing you need to do before going out on the road during the day. Make sure you apply sunscreen.
Sunscreen has a protective layer that prevents UV light (ultraviolet rays) in sunlight. Not only is the skin healthy and beautiful, but it also avoids the risk of skin cancer, because UV is a powerful cancer.
However, according to a recent study, there is a very worrying fact, that most of us are wearing the wrong sunscreen
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How is required of protection of sunscreen?
All based on SPF (sun protection factor). The higher the SPF, the better the UV protection.
The first sunscreen product appeared in the middle of the nineteenth century. And know what, its SPF index is only 2 only.
Six decades later, science has made remarkable progress. We have water-resistant sunscreen, spray-type cream, the longer the survival time. And even, there are creams that possess SPF of up to 100.
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Most of us only get about 40% of the protection that sunscreen actually delivers |
According to a study by King's College London, over the years, almost all of us have used the wrong way.
In fact, everyone knows that it is important to apply sunscreen on all the parts that can be exposed to light. But the problem is that the thickness of the cream is so many people are doing wrong. As the study points out, most people only get about 40% of the protection the sunscreen actually delivers.
"We used too little sunscreen," says study author Antony Young. "For example, you use an SPF20 cream, but only apply at a thickness of 0.75mg / cm2, the protection effect is only equal to SPF4 cream.
This is a really scary result. A lot of research has previously shown that exposure to ultraviolet light - even the smallest alone - also can cause skin damage and increase the likelihood of cancer formation.
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Exposure to sunlight can cause serious skin damage |
According to Young, the number needed is about 2mg / cm2. It's a bit hard to imagine, but it's about double that of what you usually do. In addition, each part of the body needs a different amount of cream.
In theory, sunscreen with SPF15 is enough to protect you from the sun. However, the actual sunlight has a different density of UV radiation over time and place, plus we do not apply the cream properly. Should be safe, we should use cream with SPF of 30 or more.
The study was published in the journal Acta Dermato-Venereologica.
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