Sun protection is the highlight of the summer, even if it is not for the skin, it is not good to be sunburned. More importantly, the exposure to ultraviolet rays in the sun is too high, and the risk of skin cancer is relatively high. Correct sun protection, while saving the value, is also preventing skin cancer and saving health.
Going out to be afraid of the sun, but can't stay indoors all day, don't go out and exercise? After all, physical exercise is also good for health. The American Cancer Society has prepared an authoritative sunscreen guide for everyone. Let's learn together with Xiaobian.
1, avoid the sun
The most direct way to protect yourself from the sun is to stay in the sun, especially between 10 am and 4 pm, when UV is the strongest. If you are not sure how strong the sun is, teach you a simple way - use shadow to detect: if your shadow is shorter than you, then the sunshine is the strongest, pay special attention to sun protection.
Ultraviolet rays illuminate the ground all year round, even in cloudy or foggy weather, but its intensity varies according to time and other factors. Ultraviolet light is more intense in spring, even if the weather has not warmed. People in some areas are also burned by ultraviolet rays even in cold weather, because they don't care to protect themselves because they don't feel hot outside. Be especially careful on beaches or in snowy areas, as sand, water and snow reflect sunlight and increase the amount of UV radiation. Ultraviolet light can be reached even under the water, so even if you stay in the water, you feel cool and may still be burned.
Some UV rays can also penetrate windows. Windows, homes, and office windows block most of the mid-wave UV rays, but there is still a small fraction of long-wave UV rays that can penetrate, so even if the skin doesn't have a burning sensation, it can burn. Ultraviolet radiation through the window generally does not cause harm to most people, but if you are in close contact with windows that are directly exposed to sunlight for a long time, it is a different matter.
2, wear the right clothes
If you need to go out and need to get in touch with the sun, try to put on the right clothes and cover the skin as much as possible. The clothes have different levels of UV protection. Long-sleeved shirts, trousers or long skirts can cover most skin and have the most protective effect. Generally, the dark color is better than the light color; the woven clothes are better than the loose clothes, and the dry cloth is better than the wet cloth protection.
The reality is that even if it is wrapped tightly, it will not block all the ultraviolet rays. If you can see the light through the fibers of the clothes, the ultraviolet rays will find you. Therefore, you need to take other measures.
3, apply sunscreen
Sunscreens come in many forms, such as lotions, creams, ointments, gels, sprays, wipes, lip balms, and more. Some cosmetics, such as moisturizing lotions, lip balms, foundations, etc., are considered sunscreen products as long as they contain sunscreen ingredients. There are a lot of things to know when choosing a sunscreen product.
Sun Protection Factor (SPF): The SPF value indicates that sunscreen is resistant to UVB because UVB is a major cause of sunburn. The larger the SPF value, the stronger the UVB protection function. For example, when using SPF 30 correctly, you will only absorb 1 minute of UVB for 30 minutes in the sun; and so on, apply SPF 30 sunscreen for 1 hour in the sun and 2 minutes without sunscreen. The UVB exposure received is the same. However, people often do not use enough sunscreen, so the actual sun protection is less.
Sunscreens with an SPF greater than 100 are also available. Higher values ​​mean stronger protection, but many people don't understand the value of SPF. SPF 15 filters approximately 93% of the UVB rays, SPF 30 can filter approximately 97%, SPF 50 is approximately 98%, and SPF 100 is approximately 99%. The higher the altitude, the smaller the difference. Sunscreen without 100% protection. Sunscreens with an SPF of less than 15 must be stated to prevent sunburn and prevent skin cancer or early skin aging. Sunscreens with a sun protection factor (SPF) of 30 or higher and a wide range of uses (for UV and UV) are preferred.
Full-effect sunscreen: If a sunscreen can fight both UVA and UVB rays, it can only be labeled as "Broad Spectrum." Chemicals that fight UVA in sunscreens include avobenzone (Parsol 1789), eschar, zinc oxide, and titanium dioxide. Only sunscreens with SPF 15 or above can claim to help fight skin cancer and early skin aging.
Waterproof sunscreen: Only sunscreens that protect the skin for 40 or 80 minutes when swimming or sweating can be labeled as “waterproof†or “anti-sweatâ€.
Use sunscreen properly: When using sunscreen, keep an eye on your face, ears, neck, arms and other areas that are not covered by clothing. If you want to apply anti-mosquito or cosmetics, please apply sunscreen first. Ideally, a small cup of sunscreen can cover the adult's arms, legs, neck and face. In order to maintain the sunscreen effect of sunscreen, it needs to be reused every 2 hours. When you sweat, swim or wipe with a towel, the sunscreen will be wiped off, so you need to reapply it often.
Some sunscreens can irritate the skin. Many products claim to be hypoallergenic or skin specialists have tested, but the way to see if it stimulates your skin is a trial. A general recommendation is to try a small amount of soft skin on your inner side of your elbow 3 times a day. If the skin doesn't turn red or itchy, then this product is usually right for you.
Sunscreen is just a "filter" and does not block all UV rays. It is not a sunscreen that can stay in the sun for a long time. Even if the sunscreen is used correctly, some UV rays may still penetrate, so it is not enough to apply only sunscreen.
4, wearing a hat
A hat that is 2 to 3 inches long is ideal because it protects areas that are often exposed to intense light, such as the ears, eyes, forehead, nose, and scalp. A dark, non-reflective brim bottom surface can also partially reduce the amount of UV radiation.
If you don't have a suitable hat, you can make it yourself, for example, a handkerchief under the baseball cap. A baseball bat protects the front and the top of the head, but does not take care of the parts, neck and ears that often occur in skin cancer. In addition, the straw hat with a sparse texture is not as strong as the fabric hat with a tight texture.
5, wear sunglasses
Wearing UV-blocking glasses is important for protecting the eyes and delicate skin around the eyes. Studies have shown that staying under the sun for long periods of time without eye protection increases the risk of certain eye diseases.
Ideal sunglasses should be able to block 99% to 100% of UVA and UVB rays. Check carefully to see if they have this feature before purchasing. The “UV absorption up to 400 nm†or “American National Standards Institute UV requirements†in the usual instructions means that this sunglasses blocks at least 99% of the UV rays. Marking "cosmetic" blocks about 70% of the UV rays. If not stated, do not expect it to have any UV protection.
Dark sunglasses are not necessarily better because the UV protection comes from the invisible chemicals on the lens, not the color of the lens. Wide-rimmed glasses and mask-type sunglasses are more likely to prevent light from illuminating your eyes from all angles.
Ideally, all types of glasses, including optometry glasses and contact lenses, should be able to block UV light. Some contact lenses now block more UV rays, but because they do not cover the entire eye and eye area, they do not provide adequate eye protection when used alone.
6, try to avoid sunbathing and sun lights
Many people think that the ultraviolet rays in the sunbed are harmless, but it is not. Sunlights emit UVA and are often accompanied by UVB, both of which can cause long-term skin damage, which can lead to skin cancer. The use of sun beds is associated with an increased risk of melanoma, especially for people over the age of 30. Sun beds and sun lamps are not recommended for most dermatologists and health agencies.
If you want to have bronzed skin, one of the ways is to use a sun-free tanning lotion that will allow you to have darker skin while avoiding health risks.
Nail shops also use small UV lamps to dry certain types of nail polish. These lamps emit much less UV light than sun beds, and the risk of skin cancer is usually lower. However, for safety reasons, experts recommend applying sunscreen to your hands before using these UV lamps.
7, children should pay more attention to sunscreen
Children stay outside for longer periods of time and are more prone to sunburn, but they are not aware of the danger. Parents and other guardians should follow these steps to protect children from excessive sun exposure. Especially in sunny areas, sun protection for children is important.
For yourself and for children, you should develop the habit of applying sunscreen on exposed skin. Also let your child know the dangers of excessive sun exposure. If you and your child are prone to sunburn, pay more attention to tight packaging, reduce sun exposure and apply sunscreen.
8, about the sun and vitamin D
Studies have shown that vitamin D has many benefits for humans and can reduce many cancer risks. When you are in the sun, the skin naturally begins to make vitamin D. However, how much vitamin D is made depends on many factors, including age, skin color, and sunshine intensity.
However, scientists are not sure what the optimal level of vitamin D is, although there has been a lot of research in this area. If possible, try to get vitamin D from food or dietary supplements instead of sunbathing because the former does not increase the risk of skin cancer and is more likely to reach the amount you need.
Source: 360 cosmetics website, welcome to share this article, please keep the source!
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