How Do You Shrink Nylon?

You don't. Synthetic materials, naw never mind.............

You can't shrink nylon, unfortunately, and putting it in the dryer will only make them lose their elasticity and make them baggy.

Your only other options are to get some new ones or give them to someone else in exchange for a smaller size. Nothing else you can really do. Sorry!

I don't think you can.  I tried to do that with a pair of my tights and all it did was made them loose and not nearly as soft.