Overexposure to the suns harmful UV rays can lead to skin damage in one form or another. Typically, it takes around 30 years for sun damage to appear, so the damage you do in your 20's will start to show during your 50's. Since sun damage accumulates over time, it's never too late to start a sun protection regimen.
Sun Damage Oil Video from Melanie Cardwell on Vimeo.