The layer of wax on the apple peel will not cause harm to the body if eaten. \x0d\The wax on the apple skin is generally divided into two types. One is the wax formed during the growth process of the apple. This is a lipid component and is a plant protective layer generated on the surface of the apple. It can effectively prevent external microorganisms, pesticides, etc. from invading the pulp and play a protective role; the other is artificially added fruit wax. It is this "artificial fruit wax" that worries many people. In fact, it is a chitosan substance, which is mostly extracted from crustaceans such as crabs and shells. This substance itself is not harmful to the body. Its main function is to preserve freshness and prevent apples from rotting and deteriorating during long-distance transportation and long-term storage.