One has nothing in common with the other: "water based" means that water is used as a solvent in the inks and "food dye based" means that food-grade dye(s) are used in the ink. Both can be indicated side by side.
One has nothing in common with the other: "water based" means that water is used as a solvent in the inks and "food dye based" means that food-grade dye(s) are used in the ink. Both can be indicated side by side.