Vitamin C or ascorbic acid is a water-soluble vitamin known for its role in supporting a healthy immune system. Because our body cannot make vitamin C, it must come from the foods you eat every day. Research has shown that vitamin C is essential for the growth and repair of tissues throughout the body. Vitamin C helps heal wounds and repair and maintain healthy bones, teeth, skin and cartilage - the hard tissue that coats bones.

Young people began to buy dietary supplements more frequently although they were not a big promotion, and "health preservation" was regarded by young people as a trendy attitude towards life.