Wipe with a soapy water to remove grease. Something like blue Dawn and warm water. Then wipe with a damp microfiber cloth for a streak free finish.
Clean with soapy water, and a magic eraser. Buff dry with microfiber cloth.
Bring there, done that & I still have streaks. But thanks, Peg
OK, Cynthia, tried again and used the microfiber cloth. It did a much better job, but I still have grey streaks, but they maybe old age to match their owner. Thanks again, Peg
You may have some build-up. Keep using this method, and you should see it improve. Good luck!