Wrinkles and fine lines: how to diminish them?

As we age, numerous factors impact the various tissues, resulting in a less smooth, more fragile appearance. Cellular renewal slows down, which reduces the skin's tone and radiant appearance. The sebaceous glands also become less active, leading to skin dryness and a decrease in barrier function. Consequently, the epidermis becomes more vulnerable and sensitive.

Collagen and elastin, which are present in the dermis to support the skin and provide it with elasticity, begin to decrease from the age of 25 - 30 years.

• The production of elastin by fibroblasts ceases at puberty. Even though elastin proteins are resilient and hard to degrade, certain enzymes called elastases, also secreted by fibroblasts, are capable of cleaving them and making them less effective. The skin then loses its elasticity and wrinkles deepen.

• As the years pass, collagen synthesis slows down. This loss can begin around the age of 25, and the body can lose approximately 1% of collagen per year, and gradually up to 25% per year. Thus, by the age of 80, we have lost 75% of collagen compared to young adults. Moreover, over the years, collagen fibers become rigid, fragmented, and disorganized.

In addition to this, there is a stock of hyaluronic acid, a sugar naturally present in the skin that ensures its hydration, which decreases by 50% at the age of 50. Consequently, the skin becomes less plump and less hydrated.

It is the accumulation of these skin weaknesses that creates folds on the surface of the skin, known as wrinkles and fine lines.

• A prolonged and repeated exposure to the sun contributes to the aging of skin cells, just as tobacco use and pollution do. Fine lines are the first consequences;

• The stress and the lack of sleep can also contribute to skin aging;

• The lack of hydration, it is recommended to drink 1.5 L per day which is approximately 8 glasses of water.