collagène

Collagen is a protein that is abundant in the human body. It is a major structural component of connective tissues, such as skin, bones, tendons, and ligaments. Collagen provides strength and elasticity to these tissues.

There are many different types of collagen, with Type I being the most common. Type I collagen is found in skin, bones, tendons, and ligaments. Type II collagen is found primarily in cartilage. Type III collagen is found in skin, muscles, and blood vessels.

As people age, the body's production of collagen naturally decreases. This decrease can lead to signs of aging, such as wrinkles and sagging skin. Environmental factors, such as sun exposure and smoking, can also contribute to collagen degradation.

Collagen is often used in dietary supplements and skincare products. Proponents suggest that these products can help improve skin elasticity, reduce wrinkles, and support joint health. However, scientific evidence supporting the efficacy of oral collagen supplements for these benefits is still developing and debated. The body's ability to absorb and utilize ingested collagen effectively is a subject of ongoing research. Similarly, the effectiveness of topical collagen in skincare is limited by its large molecular size, which can hinder deep penetration into the skin.