After spending some time filling pens with permanent, waterproof inks, I’ve ended up going for the opposite effect by dissolving Diamine Prussian Blue with a waterbrush. I love the blue-black colour of Prussian Blue, and the dissolved ink fades out the drawn line in a satisfying way to make an ink wash which becomes permanent once dried.
The top picture is a copy of a Dali study. The figures in fancy dress were drawn from a photo of my grandmother’s works party, taken around 1925. I’ve made them look a little sombre; they’re having much more fun in the photo.