Smudges on stainless steel appliances:
This is something that I’ve been working with for awhile now. What I have found works best is to wash your appliance with dawn dish soap and water. Buff it dry with a soft microfiber cloth. After its been buffed dry, use WD-40. I prefer to spray WD-40 on the microfiber cloth then wipe down the appliance. . Buff it out good with your WD-40 microfiber cloth.
Another trick is to use glass cleaner like windex.
Spray the cleaner on a microfiber cloth and apply evenly in a circular motion to remove the fingerprints. Repeat as needed. be sure to rinse thoroughly and towel dry. It’s not recommended that you spray directly to your appliance, as you may end up with more drip marks and splatter residue, leaving you with more work than you initially anticipated.