No matter what brush you buy, it won't last long if you don't clean it well. Cleaning the brush isn't just wiping the paint out of it; it means thoroughly cleaning the bristles and handle. It's nice to be able to pick up a brush and feel the handle's smoothness; not a bumpy, dirty brush handle.
Use the correct solvent for the paint and remove as much of the color as possible.
Wipe the brush on a cloth rag.
Using a mild soap and lukewarm water, lather up the brush and swirl it in your palm. Rinse the brush well.
NOTE: I use a common type of brush cleaner called "The Masters Brush Cleaner and Preserver" (comes in a tan plastic container). It works very well and keeps my hands from coming in contact with the paint. If you are using paints that contain cadmium, lead or other harmful materials, this is probably a good product to use.
Repeat Step 3 until no trace of color remains in the brush. Some of the particularly powerful organic pigments will stain the bristles or hairs. This is not serious. Just be sure to get all the traces of paint out of the brush, especially at the heal where the brush is inserted into the ferrule.
Rinse the brush, shape it, and put it away to dry.
