Concrete Mender is applied with a needle tip to a hairline crack in a decorative concrete floor.Repairs are blended in with the surrounding concrete using sandpaper as the product cures.The sandpaper picks up particles and color from the surrounding concrete and blends hem into the Concrete Mender while it’s in a plastic state. The result is a repair that blends with and closely matches the surrounding concrete. The floor is resealed after and the repairs blend in nicely.