Did you know sunscreen has a shelf life and can expire? Or that too much heat or cold can ruin a new bottle? Protecting your skin from harmful sun rays will help against inflammation, burns, premature aging and, most importantly, skin cancer. Dr. Dawn Davis, a Mayo Clinic dermatologist, has more on sunscreen shelf life and other facts to help make decisions as you head into the sun. You might think a dermatologist is going to ask you to ban the sun. “There’s nothing wrong with being outside in the Read More