The Brush Construction
1.Common makeup brushes:
Consists of three parts, i.e. the bristle, ferrule (metal part) and the handle. This is the basic, most widely used and popular type.
(Also called mushroom brushes). Such brush only consists of bristle and bottom case. In fact there is another part-a blank tube inside the foundation pipe, which is used to carry the bristle. However it is invisible from outside.The material of the bottom case could be metal, wood, bamboo, plastic or others.
Consists of four parts: a upper cover, a bottom cover, bristle, and the joint of two covers. The bristle is covered inside, so is invisible from outside.