Back in the day, all shaving brushes were made from either pig bristle or badger hairs.
 
Although many most shaving brushes today still use animal hair, you won’t easily find one made with synthetic fibers. 
 
Not only are synthetic brushes cheaper, they also have the advantage of being both softer and more durable than brushes made from animal hair.
 
The Intrinsic Vegan Shaving  Brush is not only well-made, it’s a third the price of most non-vegan shaving brushes.
 
If you want to go upscale, check out this brush made by Intrinsic Shaving.