Grout Shield Color Seal is a long -lasting highly wear resistant sealer for your grout. Ideal for changing or restoring your grout color. Color Seal is a finish top coat that"s applied directly to sanded and unsanded grout. It dries to a natural look and feel. Apply product onto grout line and brush into the surface of the grout. Wipe away excess product from tile surfaces with a damp chamois cloth. Grout must be free from paint, alkali, wax, sealer or other contaminants prior to application. Shake well before use.