How to Mix and Blend Colors with Tombow Dual Brush Pens - Tombow USA Blog
Tombow Color Chart (+ Printable to track your 108 or 96 dual brush pens)
Tombow USA on Twitter: "We love this Dual Brush Pen Pastel swatch page in @mollykateillustrates' journal! How do you keep track of your Dual Brush Pen colors? #tombow #tombowusa #regram 💕 #tombowdualbrushpens #
Tombow ABT Dual Brush Pen Review – Ian Hedley ASGFA