An antioxidant thought to be essential for normal function of the retina, Vitamin A aids in the soothing of many eye disorders, promotes bone growth and tooth development, and helps the body form and maintain fine healthy skin, hair and mucus membranes. Vitamin A also plays a role in cell division and reproduction.

Vitamin A is used to preserve a smooth skin texture, prevent dryness, and avoid blemishes or hasten their correction. Deficiency can cause eruptions or dry, course, wrinkled skin; dry hair or dandruff; ridging or peeling fingernails, as well as night blindness and lowered immunity. Vitamin A may be derived from plant or animal sources, and is notably found in carrots. Recommended daily intakes for adult men and women are 900mcg and 700mcg, respectively.