Roger that caqtas. And not just on the flight deck either. If you live/work in sunny climes, remember SLIP, SLAP, SLOP - "slip" on a shirt, "slop" on sunscreen and "slap" on a hat. Girls, don't forget your legs.
Sun damage is cumulative over a lifetime - many of the chaps I see (I run the surgical side of our local Skin Cancer Unit) did their real damage many years ago and only now are the effects visible.