Sunburns are normal and are no cause for concern if they are few and far between, and mild. But repetitive sunburns can pose a real threat to you and your health. Tans and sunburns mean that you have damaged skin cells. So overexposure can lead to the development of skin cancer.
Along with cancer, overexposure to the sun can cause your skin to age faster. This can make you look older than you are by producing wrinkles and lines.