Expose chemical retarder that provides a simple, economical method of exposing aggregates for freshly poured concrete flat work. The organic compounds react with components in concrete to slow the strength gain on the surface and allow the mortar to remain workable for a longer time. Due to the controlled penetration, Expose allows the concrete underneath to harden normally. After the concrete has set for up to 1 day after application, the retarded mortar surface can be brushed off with a stream of water and a stiff bristled brush. Expose produces consistent, repeatable results without hot spots for depths of up to 3/16”.