Carefree Prime-ZALL is an innovative 100% water-base epoxy universal primer created using breakthrough technology to offer unparalleled stain blocking for use in both interior/exterior applications. This unique formulation provides superior performance when compared with traditional solvent-based primers. Carefree Prime-ZALL adheres to a variety of substrates including aged alkyds, is low odor & low VOC, and meets or exceeds air quality standards. The quick-drying properties of Carefree Prime-ZALL allow a finish/top coat to be applied within 40 minutes after application of this primer. Carefree Prime-ZALL also provides superior enamel holdout for glossy top coats. NOTE: This product contains ingredients that resist the growth of microbes on the surface of the paint film.