Detailed answer

Collagen is a protein that provides structure and support to the skin. It helps maintain skin elasticity and firmness, preventing the appearance of dark circles and under-eye bags. As we age, collagen production naturally decreases, leading to the thinning of the skin around the eyes, making blood vessels and underlying fat more visible. This can result in the darkening of the under-eye area. Additionally, the loss of collagen weakens the skin's ability to hold fat, causing the fat pads to protrude and create under-eye bags. Therefore, maintaining healthy collagen levels through proper skincare and nutrition is crucial in preventing and reducing the appearance of dark circles and under-eye bags.