Collagen is a fibrous protein that serves as a fundamental building block for various connective tissues in the body, including the skin. It is the most abundant protein in mammals, constituting a significant portion of the extracellular matrix, which provides structural support to cells.

In the skin, collagen plays a crucial role in maintaining its strength, elasticity, and firmness. The collagen fibers form a network that supports the skin cells, contributing to its structure and overall integrity. Collagen is primarily produced by specialized cells called fibroblasts, which are found in the dermis—the deeper layer of the skin.
As we age, the natural production of collagen tends to decline, leading to visible signs of aging such as wrinkles, fine lines, and a loss of skin elasticity. External factors like UV exposure, pollution, and lifestyle choices such as smoking can also contribute to the breakdown of collagen fibers in the skin.