Stuart's painting tips

I too have found that even my sable hair brushes will tend to curl at the tip.
I had one possible idea for how to try to address this (based on the theory
this is caused by stressing the brush in one direction of twist). Often, when
people clean brushes (or even point them using their tongues), then tend to
rotate the brush in a particular direction. My theory is the end result of
this is the "hooking" of the brush tip. Try reversing your usual direction for
a time
and see if that helps. It _seems_ to have, for
me, but that is hardly statistical evidence.