100% pure flat white-pigmented shellac. Hides water stains-matches most acoustical tiles. Seals porous surfaces, spackled spots, etc. Stain-killing spray for greasy spots, inks, crayon, knots and sap streaks. Primes hard-to-bonddense, glossy surfaces. Top coat in 30 minutes. Non-toxic, safe to use on toys. Great for priming hard to reach areas.