Put on rubber gloves to protect your skin from irritating and skin-drying cleansing solutions.
Pour 1 gallon of warm water into a bucket. Add 2 cups of ammonia.
Soak a clean cloth with the ammonia solution. Wring out the excess moisture.
Scrub the aged-looking Formica surface to remove dirt and any wax that might be contributing toward the yellowed and dull appearance.
Use a nylon mesh sponge dampened with the diluted ammonia solution to scrub any heavily stained or wax-covered areas.
Rinse the Formica with a damp cloth. Dry the surface with clean cloths.
Tackle any remaining yellowed or aged-looking areas with a paste made from 1/2 cup of powdered oxygen bleach and enough water to bring it to a peanut butter consistency. Apply the paste to the Formica and scrub with a natural bristle brush.
Wipe the paste off the Formica surface with a damp cloth. Rinse the surface with undiluted club soda to give your Formica a lustrous shine. Buff the Formica dry with another cloth.