The main components of Weikangmino hyaluronic acid facial spray for children are: water, butanediol, propylene glycol, Auschwitz seaweed extract, aloe vera extract, carboxymethyl chitin, sodium hyaluronate and DMDM hydantoin, among which carboxymethyl chitin is a chitosan derivative independently developed and produced by Weikang Group for 22 years. Weikang has developed and produced a series of chitin products, won many national invention patents and formulated many industry standards. The carboxymethyl chitosan contained in Tong Yan spray completely meets the national standard and is easily soluble in water. After spraying, it forms a water-soluble barrier on the skin surface, absorbs heavy metals, protects our skin, repairs skin damage, accelerates cell regeneration and tightens the skin.