You can often get an idea of how old someone is by looking at their face, specifically the skin. As people age, it's normal to get wrinkles. A person who has spent a lot of time in the sun, or smoking cigarettes might have a lot more of them.

When we're young, we don't have wrinkles because the skin has a lot of elasticity and it does a great job of stretching and holding in moisture. The dermis has an elastic quality thanks to the fibers called elastin that keeps the skin looking and feeling young.  A protein found in the dermis called collagen also plays a very large part in preventing wrinkles.

Over time, the dermis will naturally lose both collagen and elastin, so the skin becomes thinner and has trouble getting enough moisture to the epidermis. The fat in the subcutaneous layer,the bottom layer gives the skin a plump appearance and that also begins to disappear, then the epidermis which is visible begins to sag, and the wrinkles begin to form.

let’s simplify It

With the aging process, the epidermis, your visible skin becomes thicker and the dermis and the fat layer underneath it become thinner. These two layers are mainly responsible for wrinkle formation. The dermis is mainly made of collagen fibers with elastin fibers to give the skin its elasticity. With age, collagen and elastin reduce and the support of the skin starts to break down because production of new collagen and elastin starts to slow down. 

When this begins to happen, it makes it easy for any skin change such as wrinkles to appear and become permanent.
Even when we make facial expressions such as smile, raise eyebrows, squint our eyes, make forehead lines and when the support of our skin begins to weaken, these changes become etched on our face forever. They are those pesky unwanted lines called wrinkles. Even when we are sleeping we can cause wrinkles by sleeping on one side every night, causing wrinkles on the side of your face and after time those wrinkles stay put. Smokers can get them around their mouth from constant puffing or squinting the eyes. After your thirties, these changes begin to become permanent on the skin and make you appear older than your age.

So knowing that your collagen and elastin in your skin begins to weaken and cause wrinkles, it’s essential to help assist your skin to keep producing collagen and elastin through keeping your skin as healthy as possible.