It’s an easy habit to get into, just like brushing your teeth. Up to 80 percent of the sun’s UV rays can pass through clouds. This is the reason people often end up with serious sunburns on overcast days if they’ve spent time outside with no sun protection. Sun damage is cumulative. So even if you only spend 15 minutes per day outside this adds up over the course of a lifetime. Take a few minutes every day to apply your sunscreen and you will prevent uneven color, broken blood vessels and wrinkles. You can even prevent skin cancer.