Learning how to shrink polyester underwear is not hard. All that you need to do is use your washer and dryer, but you must make sure that you want your underwear to shrink. Heat, which may be applied to the clothing in the wash, is usually very good at shrinking this material, and tight underwear is rarely comfortable, so be sure that yours is significantly baggy before you begin. The following is advice on how to shrink polyester underwear.
Learning how to shrink polyester underwear is easy. All that you need to do is run it through the washer and dryer on high heat. If you want it to stay the same size, after you have made it shrink, simply use cold or warm, but not hot, water.