Apply it after prepping the concrete using a standard garden ... Red Devil acrylic asphalt crack filler sealant is the sealer ...

Use a putty knife to scrape away any excess patching compound that escapes the crack when trowelling,' suggests Korey. You can also apply a sealer, like this concrete sealer from Amazon ...

Poly Fix's water-like consistency also makes it an excellent crack healer/sealer for deteriorated concrete surfaces.