Does 100% polyester shrink when washed and dried?
Synthetics (as a rule) do not shrink. Polyester is essentially plastic. Knowing this, I would recommend washing with warm water and drying on low heat until you see how your particular fabric responds.
It won't shrink, but it could scorch! Just remember that it is a type of plastic, and that you should ALWAYS use the low heat settings for both waching and drying.
According to ASK: Polyester can shrink in the dryer if constantly exposed to very high heat. It is best to dry polyester in low to medium heat to prevent the shrinkage. If you are looking to shrink it wash it on the hottest temp and dry on highest heat temp.
