Use your new brush in the shower to wash your entire body,,,,,,Use tons of shaving soap and get a bit rough with it.
The shower head is great for getting soap out. Apply more soap and go at it again.
Not only will this get that wet badger smell out of the brush, but it will also start the bloom naturally.
It might seem a bit strange, but it really works. What could be better for breaking in your brush than skin and shaving soap? Your body has TONS of skin....
Works great, feels great, and your brush will bloom quickly/naturally. No need to use chemicals or shampoos.