Collagen is a protein responsible for healthy joints and skin elasticity, or stretchiness. It's in your bones, muscles, and blood, comprising three quarters of your skin and a third of the protein in your body. As you age, your existing collagen breaks down, and it gets harder for your body to produce more Delivers a therapeutic 15g dose of pure collagen protein in an easy to dissolve powder. Dissolves into hot or cold liquid. For the performance focused. That's you.