Several studies have shown that smoking can have a significant negative impact on your looks. "Smoking decreases the blood supply as well as nutrients that the blood supply provides to the deep layers of the skin," says Rokhsar. This can lead to a loss of elasticity and extra wrinkles. Plus, smokers often develop unattractive lines around their lips (although too much straw use can cause these too). The sooner a person quits smoking, the better off they'll be but some damage may be permanent.