We always recommend wearing a broad spectrum sunscreen every day, even during the winter. A broad spectrum sunscreen will protect you from both UVB and UVA rays. The UVB ray is the “burning” ray. This ray stops at the first layer of skin. When you look at your skin, you can see if it’s burning or tanning. The UVA ray is the “aging ray” which causes wrinkles. This is also the most harmful ray because it penetrates into the deeper layers of skin and changes the DNA in your cells. These cells can possibly become pre-cancerous or cancerous. This ray is also harmful because it is out 24/7. It penetrates the clouds and windows, and is also emitted from light bulbs. Sunscreen is the #1 anti-aging product. A must have EVERYDAY!