How to clean your lamp shades
Glass Shades – Use a soft damp cloth for light cleaning, or a gentle glass cleaner or soapy water for tough grime.
Fabric Shades – Most fabric shades can be vacuumed gently to remove excess dirt. For serious stains, you’ll want to consider a dry cleaning product that you can use at home.
Beaded Shades – Vacuum beaded shades frequently to avoid dust buildup. Use a damp cloth to remove stubborn spots, making sure to wipe gently and avoiding rubbing too hard on the beading.
Paper Shades – In many cases you’ll be able to simply wipe paper shades with a dry cloth. If the dirt and dust becomes thick, you’ll need to replace it.
source: destination lighting