Vitamin C is a very good medicine for healing wounds. The use of vitamin C can enhance the synthesis of collagen in the wound and increase the immunity of the wound, so you can consume more fruits and vegetables containing vitamin C when you are slimming down. In vitamin C deficiency will affect the metabolism of chondroitin sulfate in the connective tissue, the formation of intercellular adhesive substances and collagen fibers will be hindered, and the new growth of capillaries will be affected, thus making it difficult for wounds and fractures to heal. If lack of vitamin C also affects the development of bones, teeth, etc. In medicine vitamin C is used as a routine medicine for wound treatment and bone, but vitamin C should not be applied directly to the wound healing area. Because the skin does not have the function of self-synthesizing collagen, it needs to be supplemented orally or with vegetables and fruits that are high in vitamin C to synthesize collagen inside the body.