We know we need sunscreen in the blistering heat of summer - but few of us keep the skincare ritual going all year round. 

However, according to dermatologists, just because it is cold does not mean your skin is not being exposed to cancer-causing and wrinkle-inducing damage from ultra-violet rays. 

Although there is a seasonal drop in UVB rays, which cause sunburn and skin cancer, there is not a significant decrease in UVA rays, which cause skin ageing and dark spots.

If it is snowy, the reflected light can be just as damaging as 80-degree sun - especially if you're in a higher altitude.

But even in milder climes, you need to be wearing at least SPF 30 and reapply every two hours to protect yourself.  

<b>Your skin is still exposed to dangerous light rays during the winter, dermatologists warn</b>

'It is important to use sunscreen all year around because ultraviolet rays which cause sunburn, skin cancer, and skin aging, reach the skin even in winter,' Dr Shari Li