In February of this year I bought a Vulfix 2235S brush in super badger. From the start, it lost a couple of hairs every day but recently it has been shedding over a dozen a day. Yesterday I e-mailed Vulfix to express my disappointment about this. To their credit, they replied promptly and said that a new brush would be mailed to me straight away.
We shall see if the new brush behaves better when it comes, but full marks to Vulfix for their pleasant and helpful customer service at any rate.
Duncan.