If you have recently replaced your old porcelain or cast iron tub with an acrylic model, keep in mind that the care of acrylic is different. Acrylic is a non-crystalline thermoplastic with similar properties to glass. Commonly used for bathtubs and surrounds, acrylic is easy to clean and impact resistant. Despite its advantages, acrylic requires special care. Mild cleaners and a waxing every now and then can keep your acrylic bathtub looking like it just left the showroom.
Squirt dish soap onto a wet sponge and wipe the tub down using a circular motion. Then rinse with water. Once a week cleanings with a mild cleaner will keep your acrylic bathtub shining like new.
Apply liquid polish to a soft cloth and buff away any light scratches that might have appeared.
Rub away deep scratches and burns lightly with sandpaper, 600 grit or higher, until they are no longer visible. Restore the shine to the sanded area using a liquid polish.
Apply paste wax to a soft cloth and wax the tub, allow it to dry, and then buff it off in a circular motion using a soft, clean cloth to get a shine. You can use ordinary paste wax such as one you would use on your car.
Mix water and baking soda in a small bowl, forming a paste. Apply the paste to your acrylic bathtub using a damp sponge. The baking soda will break through soap scum without scratching the acrylic surface. Rinse away the paste after cleaning.