AmeriPolish Surelock Interior Polishing Dye has recently updated their formula, making it the most vibrant concrete dye Surelock has ever produced. It's a versatile colorant for polished concrete that mixes with water or acetone. SureLock is to be applied just before densifying with Xtreme Hard Concrete Densifier helping the color penetrate and chemically bond to the concrete. The pre-dissolved concentrate liquid is fast and easy to use. The formula includes UV stabilizers to resist fading as well as a penetrating agent to eliminate further mixing and develop deep, rich color even on hard dense concrete.