* Skin Structure: Our skin has layers, with the top layer being the epidermis. This layer is made up of cells that are constantly being shed and replaced.
* Movement and Flexibility: As we move, our skin stretches and bends. This constant movement, especially in areas where we frequently make expressions (like our face), causes the skin to fold and crease.
* Collagen and Elastin: Our skin also contains collagen and elastin, which provide structure and elasticity. Over time, these proteins degrade, making our skin less able to bounce back from stretching. This contributes to the deepening of creases and the appearance of wrinkles.
Therefore, creases are not a helpful function of our skin. They are simply a natural result of how our skin moves and ages.