No pigment, just resin and solvent cooked into a clear paste. Add it to ink that is running too heavy and it pulls the color back without changing the tack or the transfer. Four jobs in one tin: color reducer for plate corrections, color enhancer at low dose, gloss reviver for stale ink, fixer for ink that never printed right. 10 to 20 percent. 2.5kg tins, 12 per carton, two year shelf.