Hydrolyzed Marine Collagen and Magnesium from Nature Essential is a dietary supplement Hydrolyzed marine collagen is a form of collagen that has been hydrolyzed, meaning it has been broken down into smaller fragments, to make it more easily absorbed by the body. Collagen is an essential protein found in the connective tissues of the body, including the skin, bones, tendons and cartilage. It has been suggested that hydrolyzed marine collagen may have positive effects on skin health, as it helps to maintain skin elasticity and firmness , and may reduce the appearance of wrinkles and fine lines . In addition, it has also been proposed that hydrolyzed marine collagen may help strengthen bones and joints, and improve nail and hair health. Magnesium is an essential mineral that serves multiple functions in the body, including regulating muscles and nerves , producing energy , and synthesizing proteins. Magnesium is especially important for the normal functioning of bones and teeth , and is necessary for maintaining proper cardiovascular health . Additionally, it has also been proposed that Magnesium may help reduce anxiety and stress, improve sleep quality , and reduce symptoms of depression.