Every textile screen printer should have ample viscosity reducer on hand. Union Ink s viscosity reducer can be used in any plastisol ink and contains a special detackifing agent that helps reduce the amount of ink that sticks to the bottom of the screens when printing wet-on-wet. Generally, no more than 10-15% by weight should be needed in the ink. Reducer/Detackifier will reduce the opacity of the ink and should be added no more than 1-3% by weight to high opacity ink.