I've found that a great way to remove dust from my living room drapes is to just place them in the dryer with a dryer sheet and let them spin for five minutes or so. They come out of the dryer dust-free, wrinkle-free, and they smell great!
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I never dry my curtains. I wash them in my washing machine on gentle cycle and then rehang them wet. They dry there well and they don't have to be ironed. By Robin
Lace curtains are best hand washed. If you must wash them in the machine use the gentlest setting. For stains or yellowing try vinegar or epsom salts. This is a page about cleaning lace curtains.
Overtime, as dust collects on white nylon curtains, they can become dingy. This is a page about cleaning sheer white nylon curtains.
Dry cleaning drapes can be quite expensive tempting you to consider machine washing them. This is a page about, "Can I machine wash dry clean only draperies?".
This is a page about cleaning yellowed curtains. Window coverings can yellow with age and environmental conditions. It can be a challenge to restore the color.