Horse hair is not the main source of brush hair, but because horse hair is farmed all over the world, and horse hair has a meaning of "no white hair is taken", so it has a place in the brush industry, and all kinds of brush processing factories can also process horse hair. Therefore, there are various sources of horse hair, not only in The Qing Dynasty. Generally speaking, European horse hair is mostly from its own source, while North American horse hair is mostly from the Qing Dynasty (North America lacks the ability to brush hair processing, so if north American horse hair is used, it will form back and forth transportation).
Horse hair brush is very soft, toughness is also medium, water storage is medium just right, but horse hair is generally a little loose (floppy). Brush length is a very important parameter for horse hair brushes as it relates to the following item.