Apply an abrasive cream cleanser directly to the rusty spots in the cream Corian sink. Allow the cleanser to sit for five to 10 minutes if you use one containing bleach.
Wipe the Corian sink with a damp scrub sponge to remove the rust.
Rinse the Corian sink thoroughly with clean water to remove any product residue. If any rust remains, use a dedicated rust remover.
Apply rust remover directly to the rusty areas with a cloth. Allow the rust remover to sit for the specified amount of time on the package, but no longer.
Rinse the Corian sink thoroughly with clean water.