When you age your skin becomes thinner and if you don't keep up with good eating habits and exercise it tends to be worse. I have only ever sun burned once on my shoulder when I was younger. I am Italian, however, so my skin is olive toned and olive toned skin tends to have a really hard time burning. My mother, on the other hand, use to tan easily and never burn and now she is pale, can't tan and burns. I don't buy into the Ozone BS. It really comes down to how well we take care of our bodies.