Dry skin is caused by a deficiency of which vitamin?
Vitamin A is one of the essential trace elements for the human body. It promotes the synthesis of immune proteins, maintains the normal metabolic function of epithelial cells, and promotes the synthesis of immunoglobulins. This function is mainly due to its participation in the synthesis of glycoproteins, playing a crucial role in maintaining or regulating normal immune function. As an essential nutrient, vitamin A helps maintain the health of the surface of tissues and organs, and can restore rough skin to normal.
