It’s already well know that smoking, combined with UV exposure, can age your skin prematurely, but new research shows that it even ages skin in areas where the sun doesn’t reach.

BY News Editor 13 July, 2007

The study, carried out at the University of Michigan Medical School , suggests that smoking may be associated with a higher degree of ageing on areas of skin, such as that of the inside of the upper arm, that are not normally exposed to sunlight, such as in the inside creases of the arms.

Researchers examined non-facial skin that was protected from the sun, and found that the total number of packs of cigarettes smoked per day and the total years a person has smoked were linked with the amount of skin damage a person experienced.