Aging and Wrinkles
With age, skin cells divide more slowly, and the skin s inner layer, called the dermis, begins to thin. That starts to undo skin's stretchiness and structure.
Aging skin also starts to lose its ability to hold on to moisture, makes less oil, and is slower to heal. That all contributes to the wrinkling process.
Facial Muscle Contractions
Lines between your eyebrows (frown lines) and lines jutting from the corner of your eyes (crow's feet) are thought to result from facial muscle contraction. Smiling, frowning, squinting and other habitual facial expressions make these wrinkles more prominent.
Sun Damage and Wrinkles
Getting too much sun damages your skin. That leads to wrinkles. To help prevent them, stay out of the sun between 10 a.m. and 2 p.m., and make it a habit to wear a broad-spectrum sunscreen with a SPF 30 every day, even in the winter and when it's cloudy. Wear a large brimmed hat and cover exposed skin with clothing, such as a long-sleeved shirt and pants.
Smoking and Wrinkles
Smoking curbs your skin's production of collagen, which is a key part of the skin's structure. The downturn in collagen paves the way for wrinkles.