Can't be done. Toss the brush for a new one, or see if you can get a replacement from where you bought it, or remove the knot and replace it with a new one.
If the shedding isn't too bad - 1 or 2 hairs per shave - it might not affect the brush at all. I've had some great performing brushes that had some shedding while they were new. But, for the most part:
Not a lot you can honestly do. I bought a Tweezerman years ago and the first shave the sink was full of shedded hair. Exchanged for a new one and it worked like a charm. It's possible you got a faulty one that isn't bound together tight enough.
Some hair loss is almost to be expected at the very beginning. After a week, if you are still getting hair loss, I would consider an exchange, re-knot, or a pif. It should settle down though. You may want to do some palm lathers between shaves to encourage deserters to give up.
I read somewhere there are about 20,000 hairs in a brush. That seems like a lot but it's probable a minuscule number of them are not glued right and will slip out the first week or so. It's easy to pick them out and if one knots up your brush you can use a awl to comb and tease it out. I doubt our grandmasters so easily have up in a brush over a few stray hairs. If it throws hair for several weeks you might have a problem.
Thanks, everyone. I'm no pro by any means, so I appreciate the advice. It's relatively new, but I was thrown off by the hairs falling out. The first brush either didn't lose hairs, or I didn't notice. I'll keep using it and see if it calms down. If not, I may ask for a replacement. By the way, I said boar brush. It's badger, but not silvertip. Sorry about the mistake, I was kinda tired when I posted it!
Which brush? Make some work with your wife's plastic knob,this will remove the bristles that are ready to fall. Even very expensive brushes can loose some bristles from their knot but those brands they have a good return policy If your brush is a cheap one then a re-knoting work is the best thing that you can do If it's a very cheap one then just recycle it.
"Comb" My mistake,my english are not good,i know it I did not had the chance to study your language so i can not write english very well http://theshaveden.com/forums/threads/greek-de-shaver.26126/
