or alcohol-based markers directly over finished line-art without the lines smearing

low bleed-through

color-matched lacquer

and freeform thinkers who work without ruled or gridded structure

while the warm grays work better for organic or skin-tone shading

pilot frixion refill patron 1 0 mm 3 pack Colors:Blue / Black or alcohol-based markers directly overThis Pilot FriXion Ball gel ink refill in 1. 0 mm fits the medium tip size used across the FriXion Ball, FriXion Clicker, and FriXion Pro pen range, with three gel ink cartridges of the same color in each pack. As with the rest of the FriXion line, the ink is thermo sensitive: the friction tip on the pen generates heat, around 60C, that turns the ink transparent on contact, letting you erase and rewrite over the same spot without damaging the paper