Used to fill in pinholes in concrete countertops, especially when doing integral sinks and outdoor projects. Pin holes are important to fill to prevent water from getting under the sealers, which can eventually cause delamination. Instructions: Add a small amount of water and the desired integral color to create a thick pancake batter consistency. Apply over any of the sealers using a rubber grout trowel sold in the tile department of Lowes and Home Depot (not the sponge type grout trowel). Angle the rubber trowel so one edge is a couple of inches off the surface and the other edge is pressed firmly against the surface. Spread the Pin Hole Grout Mix as thin as possible over the entire surface leaving only a thin film behind. Allow to dry completely at least 1-2 hours before removing the excess film with a damp grout sponge. When clean and dry, apply the final coats of sealer. Do a test piece first.