Collagen is a protein that is essential to the formation of our bones, muscles, ligaments, and—of course—our skin. This amazing protein is often described as a type of "glue" or scaffolding that holds things together. However, as we age, our body produces less collagen, which results in a loss of firmness in our skin, as well as weaker bones. UV rays are also highly damaging to collagen in our skin. Thankfully, there are steps we can take to protect ourselves from the sun. Being careful about one's nutrition intake and choosing collagen-boosting skincare can also help with collagen production.