Sterilize a Shaving Brush?

The good folks at Classic Shaving would know this...send them your inquiry! FWIW I used one for two years (before recently acquiring a new one) and I never cleaned it aside from a complete rinse after every use.

Gamma eradiation.

hopefully you bought a nice Badger brush.

If so, I wouldn't worry about it. Badgers are so badass that their hair has the natural ability to kill bacterium upon contact. You've seen what Badgers can do to snakes, imagine what they can do to smaller creatures.

I don't really think you can sterilize a brush w/o ruining it. If you bought it new I wouldn't worry.

Do clean it every once in a while, to remove the soap scum that has built up on the hairs.

I swish mine around in a mug with warm water and a dollop of shampoo, let it set for half an hour, rinse, then let swish it around in a mug of warm water, splash of vinegar (to remove any leftover soap scum), and a drop or two of vegetable glycerin (to keep the brush soft). Let that set for half an hour, then rinse, buff against a towel, and hang to dry.

Sigged.

I don't know about sterlizing, but I will occasionally give my really good brush a chance to dry out for a couple of days and use my not-as-good brush in its stead.

no need to sterilize anything. (sanitized would be the proper term but thats neither here nor there) Just rinse it with hot water, shake it out really good and leave it somewhere thats got some air flowing around (not in a drawer eg). I leave mine upright underneath a little lamp. The small heat from the lamp helps evaporate any water left behind.

Basically you are overthinking this/germaphobic.

No need

Everything I've read about shaving brushes indicated that they were self-cleaning with proper use. I'd say spend your time cleaning something else.

If you want a free and natural alternative to sterilization. Just pee on it, urine is proven to be anti-viral, anti-bacterial and 100% sterile. Good Luck.

I soak it in the same boiling water I use for a hot towel wrap, so pretty much every time right before my shave.

thats not really true. It may be so in the bladder but once it leaves your body it will pick up all kinds of nasties hanging out on the meatus (your peepee hole)