UV Index Scale
|UV Index Number||Exposure Level||Time to Burn|
|8||Very High||15-25 minutes|
You can safely soak up the sun — and get all its vitamin D benefits — without risking skin cancer. It’s okay to sit in the sun for up to 20 minutes a day without sunscreen protection.
To maintain healthy blood levels, aim to get 10–30 minutes of midday sunlight, several times per week. People with darker skin may need a little more than this. Your exposure time should depend on how sensitive your skin is to sunlight. Just make sure not to burn.
UV radiation only leads to sunburn after more than 60 minutes, skin doesn’t become darker. How much UV radiation can your skin handle?
|Skin type||Maximum amount of time|
|V||more than 60 minutes|
Too much longer will cause erythema—aka the start of a sunburn. For the fall, about 30 minutes is sufficient. In the winter months, however, when you’re most likely to be hibernating under your covers for hours on end, you need to be in the sun for 150 minutes.
Is tanned skin more attractive? – Quora. No, because it really depends on the culture, individual, perceptions, etc. Many people find fair skin more attractive. In much of European history (and other parts of the world), women did everything in their power to whiten their skin.
The sun’s UV rays help your body make this nutrient, which is important for your bones, blood cells, and immune system. It also helps you take in and use certain minerals, like calcium and phosphorus.
If you wear clothing that covers most of your skin, you may be at risk for vitamin D deficiency. This also means that people who train indoors during winter months may have to dig into their bodies’ vitamin D stores if they don’t consume enough, which further increases their risk for deficiency.
The precursors of Vitamin D — that is, molecules that produce the vitamin — present in your skin are activated by the sun; so soaking some morning sun is a good idea, health-wise. “Weak bones, lack of calcium and various skin and hair issues are triggered by Vitamin D deficiency.
For most people, 10 to 15 minutes of sun exposure a day is enough to receive these health benefits. To prevent sun damage and minimize health risks, you should wear broad spectrum sunscreen daily with at least an SPF of 30.
Even committed proponents of unprotected sun exposure recommend no more than 10 to 15 minutes of exposure to arms, legs, abdomen and back, two to three times a week, followed by good sun protection. That minor amount of exposure produces all the vitamin D your body can muster.
The study, performed in mice, found that exposure to UV radiation in the morning increased the risk of skin cancer by 500 percent over identical doses in the afternoon. They plan to measure actual DNA repair rates in the skin of human volunteers to confirm that morning sun is safest for humans.
While sunlight is the number one cause of skin aging, about 10 percent comes from HEV and infrared light.
Takeaway. Research shows there can be benefits to sunbathing and spending time in the sun. Exposure to sunlight can boost mood, result in better sleep, and helps vitamin D production, which strengthens bones and may help fight certain diseases.
Too much sun exposure allows UV rays to reach your inner skin layers. You know this as sunburn. This can cause skin cells to die, damage, or develop cancer.