Using a concrete stamp release agent is important for a smooth stamping process. It provides a moisture barrier between the surface of the stamping tool and the freshly poured concrete. This prevents any dirt or adhesives from sticking to the concrete surface. It also protects the color of the stamped concrete.

There are two main types of release agents. They are liquid and powder. Usually, they are petroleum-based. But there are also bio-based release agents. These contain vinegar and water.

When applying liquid release, it is best to use a pump-type sprayer. It is a good idea to let the stamped concrete dry for at least one day before adding tinted release. This helps the release color to lighten up when it is fully compacted by the stamp.

The most popular technique for creating colored accents on a stamp-ready slab is to apply an integral color and add a color hardener. After the hardener is applied, it can be pressed down to create color accents.

For a more realistic coloring, try using a darker powder concrete color. The dark pigment will accumulate in the pits and valleys of the pressed design. This makes the corners and edges of the pattern deeper and more pronounced.

Another popular way to create color accents on a stamped slab is to use a release agent. A release agent breaks the bond between the stamping tool and the fresh concrete, preventing the stamp from puckering.