How do the skin and hair change as people grow older?

As people age, the skin and hair undergo significant physiological changes due to cellular and structural alterations.

Skin Changes

The primary change in aging skin is a gradual loss of elasticity, which contributes to the development of wrinkles and a leathery appearance. This occurs because the skin's collagen fibers develop increased cross-links, restricting their elastic properties, while elastin fibers are gradually reduced. Additionally, the outer layer of the skin, the epidermis, thins, and the skin becomes drier. While the total number of pigment-producing cells (melanocytes) decreases, the remaining ones increase in size, often leading to the appearance of darker patches known as liver spots.123

Hair Changes

Hair also undergoes noticeable transformations as the body ages:
* Color: Hair follicles produce less melanin, the pigment responsible for hair color. Consequently, hair turns gray and eventually white.24
* Texture and Growth: Hair tends to thin as individuals grow older. Furthermore, the hair follicles may undergo involution, which can lead to baldness in many individuals.34