This is a waterproof oil-based ink. I find it feathers when I ink comic pages, so I only use it when I work with highly absorbent paper like watercolor paper. Other than that, I really like it. It's not Copic-proof though, so be careful! Dries matte.

I love this ink! I got it for Christmas along with the deleter trial pen set and I couldn't stop inking my drawings! My only concern is that after I've left my inked drawings to dry, two days later I tried coloring it with my neopiko markers. The ink smudges sometimes when I go over it with the neopikos... But other than that, I lov using this ink :D