Most fair-skinned people need 10-15 minutes of exposure to the sun’s rays every day. Dark-skinned folk need even more. Why? Vitamin D.
The sun, besides providing warmth and light, is a vital source of vitamin D for human beings. Your skin reacts to the exposure to sunlight by producing this important substance. Experts suggest that you need as much as 200 to 600 IU (international units) a day.
So even if winter winds are blowing, expose your face, neck, and arms to the sun whenever possible. But don’t get carried away. If you want more sun without causing damage, apply sunscreen. (National Institutes of Health)
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