Is this normal?

My Hakuhodo BZ-2 brush keeps shedding since I’ve gotten it! I’ve heard some shedding is normal and should stop after some washes but this one keeps shedding. It’s been washed about 3-4 times now, and I’ve only had it for a couple months. I’m hoping the shedding will slow down… or did I just get a faulty one? I haven’t had this issue with my other brushes 😕