Wet a soft, dusting cloth with water. Use just enough water so the cloth is slightly damp. Do not saturate it. Wipe the lacquer surface with the damp cloth to remove dust.
Blot the area dry with a lint-free, soft cloth.
Dab at problem areas with a wood cleaner that specifies it is safe for lacquer. GoodHousekeeping.com recommends you test an inconspicuous spot first to ensure the cleaner will not damage the surface, especially if the piece is antique. Wipe the surface with the cleaner only to remove smudges or marks.
Rub the lacquer surface with a paste wax that contains carnuba once or twice a year. This will restore the shine and help to protect the surface from scratching. Follow the directions with the wax for proper application. Apply the wax sparingly and only if the lacquer appears dull. Use a lint-free cloth for application.