"The Jenson's Swirly Q brush is designed for scroll striping and script lettering with
enamel based paints. Scroll striping requires thinner paint, if mineral spirits were
to be used the paint would run easier. I recommend using a slow drying automotive
reducer for enamel based paints, these can be purchased at your local
autobody supply. Clean brush thoroughly with reducer before and after each
use (do not use lacquer thinner!).
Be sure to store your brush in mineral oil between uses." - Gary Jenson