Article updated and reviewed by Michael S. Lehrer, MD, Clinical Assistant Professor, Department of Dermatology, University of Pennsylvania. Editorial review provided by VeriMed Healthcare Network on April 18, 2005.

Wrinkles are the thin, creased, and sagging skin that is especially noticeable on the face, neck, and hands.

Wind, heat and chemicals and the natural effects of aging cause a certain amount of wrinkling in everyone, but it is much worse in people who spend a lot of time in the sun....