3MS Primer is formulated with high grade Anti-Efflorescent and  Alkali Resistant pigment, that provides extra whiteness along with excellent opacity. The primer comes in two types, for exterior as well as interior walls. 3MS primer has a suitable undercoat for exterior emulsions which provides extra durability in any types of conditions. It gives a tough film and as a result, helps to provide longer life of your paint eco-system. No curing is required for this primer. It penetrates the porous surface, seals the porosity of the surface, reduces the absorption of the surface and as a result top coat gives better coverage with easy brushing.