What is the role of collagen in moisturizers?

Detailed answer

Collagen is a protein that naturally occurs in the skin and provides structural support. It helps to maintain skin hydration by attracting and retaining moisture. In moisturizers, collagen is usually derived from animal or plant sources and is typically hydrolyzed into smaller fragments for better absorption. When applied topically, collagen can temporarily improve skin elasticity by forming a film on the skin surface, reducing the appearance of fine lines and wrinkles. However, it's important to note that collagen molecules are too large to penetrate the skin deeply, so the long-term benefits may be limited. For optimal results, it is often recommended to combine collagen moisturizers with other ingredients that boost collagen production, such as peptides or vitamin C.