Only pure freshwater pearl powder can be used internally and externally. The first thing you need to do is to get your hands on some of the most popular pearls in the world, and you'll be able to do that.
First of all, popularize the knowledge of pearl powder, pearl powder is generally freshwater pearl grinding and become.
Sea water pearls have a nucleus can not do directly do pearl powder, and so many pearls to remove the nucleus of the possibility of almost 0.
So sea water pearls can not be pure pearl powder, freshwater pearls are pure pearl powder.
Jen Shichang is Taihu freshwater pearls. At that time, the Taihu Lake Pearl Cixi imperial use it.
High-quality Taihu freshwater pearl powder can be taken internally, the general quality of freshwater pearl powder is very poor, can not be taken internally.
The price is too low is not pearl powder at all, poor quality pearl powder will have a stinky flavor.
Suzhou old brand Zhenshichang, pearl powder super price at 218 yuan 26 grams (Jingdong / Taobao cheaper).
The poor fake pearl powder color black, or white, black because it contains shells, or improper process caused by the powder deterioration, white because of the addition of bleach and other ingredients. Poor fake pearl powder hand rubbing will emit a foul odor.