Add our newly formulated Latex Thickening Agent to RD-407 Mask Making Latex to thicken it up for brush-on and heavy pour applications. Add up to 5-10% Thickening Agent per total volume of Latex. Experiment to determine the best amount to add for your application. 16oz. For example: to thicken a quart (32oz.) of thinner latex, add 45-90 grams (1.5oz - 3oz) of latex thickener. This should give you a starting point for a heavier body latex.