The brushes used in this demonstration are Squirrel hair. These are long, extremely soft brushes that bend with the slightest pressure. They are known for their use in washes, which is why I have found them so pleasurable when laying down a shape or under layer. I have not tried the blend or synthetic brushes that are readily available in the style of brushes described here. I purchased my brushes several years ago from Daniel Smith, when they had their own line of brushes. Their Internet shop now only offers their artisan paint, but if you can find Daniel Smith squirrel hair brushes on eBay or another resale source, I highly recommend them. Below are some photos and links to get you started.
Da Vinci Series 803 Russian Blue Squirrel Cats Tongue Wash Brush, Size 4
Da Vinci is a German company, and I have several of their watercolor brushes. I am confident that this would be a good brush. Da Vinci sizes are by number. My Cats Tongue brush was sized by width of the heel in inches – 1/2 inch at the heel.
This schema of the parts of a brush is part of an online description of art brushes http://painting.about.com/od/artsupplies/ig/Intro-to-Art-Paint-Brushes/Brush-Parts.htm
Dynasty Faux Squirrel Brushes 1/4 in – dagger
This brush has the dagger shape, is not squirrel hair, but it lays claim to its properties. These brushes are much less expensive than squirrel hair. It is good to try something new, bearing in mind it will have its own set of advantages and disadvantages, but is not identical to its inspiration.
Strathmore, Printmaking Paper 8 x 10 400 Series, Heavyweight Glue Bound
I like painting on this paper with ink. It is heavy, and easy to peel a page from a stack that is bound by glue at one end. It has a smooth surface that is similar to hot press watercolor paper. It is a good value and will take punishment. It is acid free.
Artisan Black Walnut ink – Learn more