Collagen makes up 70% of our dermis - the middle layer of our skin. It’s also an essential element of your cartilage, bones, nails and hair. The amount of collagen our body produces also reduces as we age, which is why collagen supplements are such a common element of many people’s wellness regimes. Collagen is responsible for the elasticity in our skin, as well as protecting our bones, hair and nails from becoming brittle. Supplementing collagen can improve the levels of collagen in our bodies, often contributing to healthier hair, nails and skin.