The skin on your face is naturally thinner and more sensitive than the skin on the rest of your body, this is due to the fact that we use our faces to monitor changes in temperature, atmospheric conditions. Also our faces convey important communication and expression of feelings. This is why the first signs of aging are seen on the face.
By the time we have become adults, the life span of skin cells have decreased a lot: The average lifespan of a skin cell as an adolescent is 100 days, for an adult it is plus-minus 50 days.
The Skin's Aging Process
Between Ages 20 - 25
The first sign of aging is the appearance of a wrinkle. The appearance of wrinkles and all stages of aging can be accelerated by:
Exposure to sunlight.
Wind, dry air, changes in temperature, humidity.
Diabetes and other chronic illnesses.
Changes in hormonal balances.
Small, fine horizontal wrinkles will usually appear first, usually found between the eye brows and outer corner of the eyes. These are called wrinkles of expression.
At this point, light freckles may occur as a result of too much exposure to the sun.