Identify the hinge and finish
Check the door or hardware maker's care guidance and whether the hinge has a coating, plating or protective finish. If the metal or finish is unknown, do not start with acid, solvent, abrasive polish or a paint stripper.
Remove ordinary surface soil gently
Dust with a soft dry cloth. If the maker permits damp cleaning, use a lightly damp cloth and a mild compatible product, then dry the surface. Keep liquid away from the hinge pin, door edge, flooring and nearby electronics.
Separate cleaning from lubrication and restoration
Cleaning a visible surface does not repair squeaking, looseness, corrosion or misalignment. Lubricants, paint removal and hinge replacement have separate product or hardware requirements. Do not dismantle a door or hinge unless qualified and authorized.
Protect nearby finishes and hardware
Use a cloth that will not scratch the door or frame, and avoid over-wetting wood, lacquer or painted surfaces. Stop if the coating changes or paint transfers; ask the hardware maker or an appropriate professional about restoration.
