Zinsser Bulls Eye 123 Primer Sealer White a universal interior and exterior, water-based, primer-sealer. It offers low odour application, quick drying convenience and excellent adhesion to glossy surfaces. It effectively primes and seals a wide variety of interior and exterior surfaces. A 'bond coat' primer that’s great for hard-to-stick surfaces, it offers excellent adhesion without sanding. Bulls Eye 1-2-3 also prevents rust formation when applied over clean ferrous metal such as iron and steel. Bulls Eye 1-2-3 contains a biocide that protects the dried coating against fungal degradation, making it ideal for high-humidity areas such as bathrooms and laundry rooms. It offers effective resistance to fungal degradation on the underside and surface of the primer film, prolonging the life of your paint job.