As used and recommended by Alvaro Castagnet.
SQUIRREL / TAKLON MIX FOR WATERCOLOUR
A new development has been the combination of squirrel and taklon. TAKLON For point and spring, SQUIRREL for colour carrying capacity. This mix gives a superb brush for watercolour in particular at a much lower price than sable. Traditionally watercolourists have used brushes made from squirrel, however the hair is expensive. 20% of the SQUIRREL / TAKLON brush hair is made from blue Squirrel. This hair is a lot lighter than the taklon so the actual hair volume for the squirrel component seems much greater. Squirrel retains lots of water and when combined with taklon it makes a perfectly affordable watercolour brush