Pony hair is both very soft and produces a fine point. The first growth has a tapered tip but after that horse hair has a blunt tip. My Pony Hair bristles originate form the chest hair area of about 2 year old Ponies. Pony Hair is NOT what you may think of when you think of typical horse hair. Pony hair has a small diameter and a pointed tip. This means it is meticulously cleaned and combed out two times and is uniform in length.
It holds more ink or paint than nearly any other type of brush other than sables, and the media comes off the brush in a very predictable and uniform way. Pony hair is one of the few brush types that will keep up with artists who have a very quick hand. I don’t recommend Pony Hair for viscous media types because the brush hair is very soft.
Remember that solvents accelerate wear of natural hair brushes.
The Pony Hair brush is good for all kinds of water based media, and it is also good for thin solvent based media. My Pony Hair brushes are popular with artists who sometimes have a quick hand, and who like a brush that holds a lot of media and which can keep up with a fast technique.