Wipe the glass regularly with a feather duster to wipe away dirt as it accumulates.
Mix your homemade solution by pouring 1/2 gallon distilled water and 1 tbsp. mild dish detergent in a bowl. Distilled water prevents harsh tap water chemicals from coming into contact with the glass, while the mild detergent will safely remove residue.
Dip a soft microfiber cloth into the cleaning solution, then wring out as much excess moisture as possible.
Gently wipe the damp cloth over the leaded glass, and continue until you have cleaned all of the glass.
Allow the surface to air dry.