Types of wrinkles are based on the way the wrinkles are formed and the skin is affected. Wrinkles are seen as a sign of aging, but they can come due to various other factors like exposure to sun, laughing or smiling, exposure to pollutants, stress levels and many more. The categorization of wrinkles is based on different factors.
Skin folds that are caused by habitual facial expressions can become permanent wrinkles. Some of the common creases due to facial expressions are given below.