Lysine is an essential amino acid, meaning your body doesn’t produce it and you have to get it from your diet. L-Lysine, a form of Lysine, helps promote immune function, supports bone health, and, when paired with vitamin C, supports skin integrity.* Specifically, lysine works to repair skin at the cellular level, working synergistically with vitamin C to boost collagen production and skin elasticity.* The pairing of L-lysine and vitamin C also may help arteries by supporting strong arterial walls.*