UVA rays don’t take a break
There are two main types of ultraviolet rays: UVA and UVB. UVB rays drop off in the winter, but UVA rays remain strong all year. UVA rays also pass through glass, which means your skin is exposed even when you’re indoors near a window. You may not burn from UVA exposure, but it can still lead to wrinkles, loss of elasticity, and skin cancer.
Winter skin is more sensitive
Because we’re covered up and spending less time outdoors, our skin produces less melanin during the winter. This makes skin more vulnerable to UV damage when we head outside for longer activities, especially on bright, sunny days.
Snow can increase your UV exposure
Skiing, snowshoeing, and winter hiking are popular Canadian activities, but they come with added UV risks. UV rays grow stronger at higher altitudes, and fresh snow can reflect sunlight, increasing your overall exposure. A sunny day on the slopes can be just as intense as a day at the beach.
What You Can Do
- Use sunscreen daily, even in winter. Choose a broad-spectrum sunscreen with SPF 30-45.
- Apply a topical antioxidant before sunscreen for added protection, especially if you plan to be outside for long periods.
- Reapply sunscreen during extended outdoor activities, just as you would in the summer.
Why It Matters
According to Canadian Cancer Statistics, thousands of Canadians are diagnosed with melanoma each year. Cold weather doesn’t reduce your risk — UV rays are present all year, and winter conditions can actually make exposure worse.
Wearing sunscreen in the winter is a simple habit that protects your skin 365 days a year. With the right precautions, you can enjoy all your favourite winter activities while keeping your skin healthy.
