The wax in the apple skin itself is harmless to the body, but if you want to take the skin to eat, you should wash it clean, because this "protective film" may contain harmful substances such as pesticide residues. "You can wash your hands and brush your teeth." If you are not at ease, there are two "coup" you can try. First squeeze some toothpaste, crush it, dissolve it in water, wash it with this water, and then rinse it with clear water. The second is to put the apple in hot water with moderate temperature. Wax will melt when heated, but the water temperature should not be too high.

Or put a spoonful of salt in your hand, then gently wipe the surface of the apple for about 2-3 minutes, wash it with water, and then scrape the surface of the apple with a knife. You will find that the wax on the surface is scraped out by salt because of friction.

"However, don't soak the fruit in water for a long time, which may lead to harmful substances such as pesticide residues and microorganisms and bacteria infiltrating into the pulp. Not only can not achieve the purpose of cleaning, but also "the more you wash, the dirtier it is", which is not conducive to health.