Behold it is a “Tip”! This may be the only one and it’s nothing earth shattering but it may do somebody some good somewhere…maybe.
So if you’ve ever used masking fluid then you’ll have come across the problem of the masking fluid drying on the brush and ruining it. Well here it is, “soap”. Just your plain old bathroom soap. Lather up your brush wipe off the excess then use it as normal to apply the masking fluid. Don’t get too careless, just wash your brush out after a few minutes lather up and start again. Hope it helps.