Creasing of the facial epidermis. Wrinkles may appear at the corners of eyes, the mouth or allover the facial area. Wrinkles can be either deep or fine, related to movement (dynamic) or constant (static). Fine lines are the result of changes in the upper dermis and may appear etched in the skin; while deep wrinkles also known as furrows or folds reach the deep dermis and subcutis.
What Causes Wrinkles/Rhytides:
Over time, skin gets thinner, drier, less elastic and less able to protect itself from external damage. At the same time, the underlying collagen and elastin network begins to break down. While part of the natural aging process, it can also result from exogenous factors such as sun exposure, frowning, smoking and smiling.