Most popularly, collagen protein adds shine and strengthens your skin, hair, and nails. It also actually improves the elasticity and texture of your skin.
That said, collagen protein also has positive effects on joint pain, bone health, and the digestive tract. In fact, it actually has a very high concentration of the amino acid glycine that is vital to a healthy gut lining.
Studies also show that collagen protein can stimulate muscle growth and repair, and it can even help older individuals preserve muscle mass when aging.
Collagen protein is most effective in the predigested (hydrolyzed) form.