Ultraviolet rays have heard a lot but what ultraviolet rays are not everyone understands. Summer is the highest UV time, so are you getting the right understanding of ultraviolet rays or not?
CONTENT::: 1. What is ultraviolet rays?
2. True understanding of ultraviolet rays
2.1. Subjects are more susceptible to exposure to UV rays
2.2. When do UV rays appear highest?
2.3. Effect of ultraviolet rays on the eyes like?
2.4. At what time does ultraviolet rays affect the eyes most strongly?
2.5. Wear sunglasses help protect against UV rays?
2.6. Do you have ultraviolet rays in cloudy weather?
2.7. Do not use sunscreen
2.8. Sitting in a car is not harmful to UV rays?
2.9. Ultraviolet rays do not cause skin cancer in oily skin
2.10. Get more vitamin D by getting plenty of sun exposure Ultraviolet rays are known to cause many significant harm to the skin, eyes and many other parts of the human body. However, not everyone understands correctly about ultraviolet rays. Misunderstandings about ultraviolet rays can make you stay in the wrong way. Find out information about ultraviolet rays in the article below will help you have a better view of this ray as well as understand the best of ultraviolet rays. 1. What is ultraviolet rays? Ultraviolet or ultraviolet rays are also abbreviated as UV, from the English language is Ultraviolet. Ultraviolet rays are electromagnetic waves with shorter wavelengths to visible light but longer than X-rays. Ultraviolet rays can also be divided into near ultraviolet with wavelengths from 380 to 200 nm and far ultraviolet or vacuum ultraviolet with wavelengths from 200 to 10 nm. Specifically, when ultraviolet rays affect human health and the environment as follows: UVA rays, also known as long wave or black light, have a wavelength of 380-315 nm. UVB is also known as the average wavelength with a wavelength of 315-280 nm. UVC has a shorter wavelength of 280 nm and is also known as a short wavelength, or is sterile. 2. Understand correctly about ultraviolet rays In summer, the highest time of year ultraviolet rays appear because direct sunlight greatly affects the skin, eyes and human health. So what major myths do you often encounter in the summer about ultraviolet rays that affect your quality of life? 2.1. Subjects are more susceptible to exposure to UV rays Young people are more vulnerable to UV exposure. Research data shows that up to about 50% of people are exposed for life to ultraviolet rays before the age of 18. Young people are more often exposed to ultraviolet rays than young people spend more time outdoors than older people. In particular, young people under the age of 18 still do not fully understand the harmful effects of UV rays to their health, so they do not really pay attention to covering their skin, wearing a wide-brimmed hat or sunglasses to protect their eyes when going out in the sun. . 
Ultraviolet rays affect everyone if they do not protect the skin properly – Photo Internet 2.2. When do UV rays appear highest? It is known that the amount of UV rays in the sun will be the most from 10 am to 4 pm. This is also known as the time when the sun contains the most ultraviolet rays of the day affecting people. In addition, in Vietnam, ultraviolet rays are most active in the summer. Vietnam is a tropical country, ultraviolet rays are present in all seasons of the year but highest in the summer. 2.3. Effect of ultraviolet rays on the eyes like? Many people mistakenly believe that ultraviolet rays cause little effect on the eyes. In fact, the harmful effects of ultraviolet rays on the eyes often accumulate over time. In particular, many cases of harmful effects from ultraviolet rays to the eye once it has emerged can leave permanent consequences. 2.4. At what time does ultraviolet rays affect the eyes most strongly? Ultraviolet rays are most active from 10 a.m. to 4 p.m. It is wrong to assume that this is the time when ultraviolet rays have the strongest impact on the eyes. In fact, eyes and skin are not the same. The human eye tends to be most exposed to UV radiation in the early morning and late afternoon. This means that the eyes are exposed to ultraviolet rays before 10 a.m. and after 4 p.m. Read more: How are UV rays harmful to the eyes? How to protect eyes from the sun. 2.5. Wear sunglasses help protect against UV rays? Many people believe sunglasses can 100% protect eyes from UV rays. However, this is a misconception. In fact, not all sunglasses are created with the same process and quality. This shows that there are many types of sunglasses that do not provide the ability to protect the eyes from the harmful effects of UV rays. Especially the sunglasses sold on the market without brand. Research done confirms that up to 45% of ultraviolet rays can still reach the eye even when you wear glasses with UV protection. Therefore, experts make the mistake of choosing large sunglasses that surround the eyes and need to make sure that the sunglasses you use are effective in protecting the eyes from ultraviolet rays. In addition, glasses should be worn during outdoor activities. 
Absolutely not subjective because wearing sunglasses does not completely protect the eyes from UV rays as you think – Internet photo 2.6. Do you have ultraviolet rays in cloudy weather? Most people think that if the weather is cloudy, when it is not sunny, UV rays will not appear. In fact, more than 90% of the ultraviolet rays penetrate the clouds. And from there, ultraviolet rays affect your skin and eyes. For weather, even on cloudy days, UV rays have the ability to affect as well as affect human health. 2.7. Do not use sunscreen A lot of people, especially women, because they use so many lotions, take care of their skin before the sunscreen step. The types of products used can also protect against the sun, so it is completely wrong to not use additional sunscreen on your skin. Only do not use extra sunscreen when the cosmetics you use have a sun protection factor of SPF 30 or higher. If not, be sure to apply an extra layer of sunscreen after using other lotions. Note, should re-apply sunscreen every 2 hours when participating in outdoor activities for a long time. Not only that, cosmetologists also said that most cosmetics do not provide enough functions to protect the skin from the harmful effects of ultraviolet rays. Meanwhile, if there is sun protection effect, the cosmetics only have an SPF of lower than 30. : Instructions on how to use sunscreen effectively and properly Mistakes when applying sunscreen that many people make 2.8. Sitting in a car is not harmful to UV rays? One of the many misconceptions about ultraviolet rays people encounter. In fact, even though the car’s glass has the ability to reduce the radiation intensity. However, it is also not possible to completely prevent UV rays from causing. Therefore, the effects of sunlight can still affect the skin if sitting in a car without other skin protection measures. 
Ultraviolet rays cause skin cancer for all skin types, not excluding oily skin as people mistakenly believe – Internet photo 2.9. Ultraviolet rays do not cause skin cancer in oily skin It is believed that ultraviolet rays do not cause skin cancer in people with oily skin. In fact, any skin type can suffer permanent damage or skin cancer if regularly exposed to ultraviolet rays. Therefore, people with oily skin still need to apply appropriate skin protection measures to combat the harmful effects of ultraviolet rays. 2.10. Get more vitamin D by getting plenty of sun exposure Many scientific studies have shown that prolonged skin exposure in the sun not only does not increase the absorption of vitamin D but also increases the risk of leading to cancer or other skin damage. Although the sun has many effects on the skin and eyes. However, the sun still has certain effects on mental health and metabolism of the body. Therefore, you still need to do outdoor activities or expose your skin to the sun at certain times of the day. UV rays can cause damage to the skin and eyes. So, getting the right understanding of ultraviolet rays can help you protect yourself effectively and properly.
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