Vitamin C
Vitamin C, also known as ascorbic acid, is necessary for the growth, development and repair of all body tissues. It’s involved in many body functions, including formation of collagen, absorption of iron, the proper functioning of the immune system, wound healing, and the maintenance of cartilage, bones, and teeth. Vitamin C also aids in the brightening skin process by priming the skin cells and making them more susceptible to the effects of Glutathione. Additionally, research suggests that Vitamin C itself may possess some brightening properties.