If you keep your plastic piano keys clean with proper maintenance, they will stay beautiful. You will enjoy playing your piano much more when the keys are free of dust and dirt. Although older pianos often came with ivory white keys and ebony black keys, newer pianos and rebuilt pianos usually have all plastic keys. If you do not know what kind of keys your piano has, ask your piano tuner or technician. You can keep plastic piano keys clean and shining with little trouble.
Dust the keyboard regularly with a soft cloth. Frequent use of a dry cloth will prevent build-up of dust and grime.
Clean a dirty keyboard with a soft cloth just barely dampened with plain water. Dry the keys carefully with a dry cloth.
Clean a very dirty keyboard with a soap or detergent solution. Add a little mild soap or dish detergent to water, moisten a soft cloth and wring it out thoroughly. Wipe the keys with the cloth, not allowing any water to drip into the bed of the keys. Dry the keys with a soft cloth.
Contact your piano tuner or technician if your keys have stains you cannot remove. Do not use abrasives or harsh chemicals on them.
Prevent dust accumulation by covering your piano keyboard when you are not using it. If you want to keep the piano open, use a long rectangular strip of felt as a key cover.
Don't drink or use liquids near the piano. Spills can cause damage. Wash your hands before you play the piano. Ask children to wash their hands thoroughly before playing as well. When you polish the piano cabinet, avoid spray cleaners or polishes containing silicone. Keep your piano away from windows and sources of hot air, cold air and humidity.