If you’re looking for an additive that can help your latex paints and primers flow and level better, Zinsser’s Latex Paint Extender is the perfect option. This safe, biodegradable additive is designed to help open up the paint and primer and give you a longer working time. Whether you’re using latex paints, water reducible oil/alkyds, water-based stains, waterborne DTM finishes, water-based varnishes or waterborne epoxies, this additive can help.