An upholster can also usually wash and reuse horsehair when reupholstering a piece of furniture upholstered with horsehair. It's very resilient stuff(ing). You

An upholster can also usually wash and reuse horsehair when reupholstering a piece of furniture upholstered with horsehair. It's very resilient stuff(ing). You can also get horsehair fabric for upholstery purposes; it apparently wears like cast iron. Am not an upholsterer, but I work with one somewhat regularly when a client wants an upholstered piece.