wrinkled lips causes
Wrinkles are causes by a drop in collagen content associated with aging, and accumulated exposure to sun and wind. Smoking is another primary cause of both of the wrinkles in the skin and lips. Another cause of lip wrinkles is the net loss of lip volume with aging. As people get older, their skin loses elastin and collagen - the skin components that gives lips their full, smooth and plump appearance. In addition, facial fat, which provides some of the plumpness for the lips, is lost as you get older.