BonAyu Vitamin C contains Vitamin C, is an essential nutrient that cannot be stored or made in the body, so a regular intake is required. It plays many beneficial roles including the normal function of the immune system, normal formation of collagen for normal skin function, and the reduction of tiredness and fatigue. If you feel you are not getting enough from your diet, this supplement could help safeguard your intake. This pack is designed to fit in a pocket enclosed inside a thin nutrient protective sealed foil easy to use on the go anywhere, anytime without water.