Preparing a synthetic shaving brush

I know that you don't need to soak a synthetic shaving brush before using it, but how many seconds do you have to rinse it under the faucet?

I know that you don't need to soak a synthetic shaving brush before using it ...

I'm NOT that sure.

I'm a huge fan of synths.
Specially the new gen ones.
From Gen4 they're my golden standard.

These are very soft, most of them, and have benefit to soaking as naturals.
Only difference, synths needs hot water.
Mine comes out at 55°C (131°F).

First thing in the bathroom, I put the brush in a glass with hot water to cover the loft.
I leave it soaking for the time I wash me, a couple of minutes.
This helps to activate the plastic capabilities of the fibers.
So they works easily, with less spring effect.
For me, this makes a huge difference.

I would agree with the above that the 'newer generation' synthetics are good to soak, but for most synthetics, like tuxedo, boss, plissoft, etc., I have had good success just running them under water until they seem saturated, then I just shake it out like I would a badger and slowly add water into the lather until it's to my liking. Just play around with it, because some synthetics will hold a lot more water than others - that's why I like to shake them out pretty good and add the water back in.

Just play around with it, because some synthetics will hold a lot more water than others ...

The thinner ones.
The new generations, from Gen4.
On those, soaking is very effective.

About water, I totally agree.
During lathering It's easy to add.
So I start too after shaking out all the excess.
Specially with naturals, which hold water inside fibers too.