You sill need to wear Sun SCREEN in the winter.
Here are 3 reasons why;
1. The Sun is just as dangerous in the winter; according to www.SkinCancer.org, UVB rays are less intense in winter, however equally damaging (and possibly more dangerous) UVA rays are just as strong as during the summer months.
2. Not Sweating does NOT mean not burning; according to MD Anderson the snow reflects 80% of the Sun’s rays back onto your skin.
3. Sun SCREEN prevents windburn.