Pearls have been sold for several thousand yuan a catty. If they are really ground into powder, it will be very expensive. However, if young people use it to attach noodles, they must use powder ground from pearl snail shells, but it also has an effect. 15-both in 45 yuan, depending on the fineness of the powder, but the usage is: powder+egg white+honey or powder+pure milk, depending on personal skin absorption.