Use products (cleansers, conditioners, brushes, etc.) specially designed for wigs.
Be gentle!
Wash with cold water. Never wash with hot water, this can damage the fibers of hair and compromise the style/structure of your wig.
Wash only as often as you need to. This will prolong the life of your wig/hairpiece.
Never twist/wring/squeeze your wig.
Avoid sleeping on the wig. This may compromise its style/structure.
Never expose your synthetic wig to heated styling tools such as hair dryers, curling irons, or other heat sources.