Accent Multi Prep Acrylic is a high-performance, water-based, primer, sealer and undercoat with a durable, flexible, and stain-blocking finish. It is ideal for most projects and substrates, and can be applied both inside and outside. The formula is easy to use and blocks stains. - Multi-purpose water-based prep coat for interior and exterior use - Water based - Stain blocking - Get the job done faster: primes, seals and undercoats all at once - Highly versatile, ideal for most projects & substrates