Apply sunscreen every day before you go outdoors. Sunscreen is the closest thing we have to a fountain of youth. It really can slow down skin aging. It can also help prevent skin cancer. Look for a sunscreen that offers broad-spectrum protection, SPF 30 (or higher), and water resistance.
Don't smoke. Smoking speeds up how quickly your skin ages. If you smoke, your wounds will also take longer to heal. And research shows that smoking worsens some skin diseases, including psoriasis .
Check your skin for skin cancer. Skin self-exams can help you find skin cancer early when it's highly treatable. If you notice a spot that differs from the others, or one that changes, itches, or bleeds, make an appointment to see a dermatologist.