I had 5 brushes that had hairs that were splayed out from the main body of hairs at angles of 45 degrees or more. They were so useless that I had actually bought replacements for 2 of them, thinking "Well, they are about 12 years old, after all. I guess I can't expect brushes to last forever... I will now use them for, hmmmm, nope - won't work for anything except maybe, hmmm... can't think of one thing I can use these brushes for!" Then I read of a very simple help for this kind of a "ruined" brush that would bring all those unruly brush hairs back into line, creating a beautiful sharp tip for rounds, and a chisel edge for flats.
The secret? Put a pot of water on your stove and bring it to a boil. While it is boiling, swish your brush hairs in the water (try not to immerse the ferrule, as this is where the glue is which holds your brush hairs together). Bring the brush out of the water, and when cool enough, form the sharp point or chisel edge. Leave to dry (upright of course) and voila! Your brush hairs are all standing at attention, together again!
How simple is that? Hope this helps some of you out there in these tough economic times. No need to buy new - just a few moments to recapture what was thought of as useless! Now back to some happy painting with renewed and reusable brushes. :-)