What are costume wigs made of?

100% PET (poly(ethylene terephthalate))

Clown wigs are sometimes made from yak hair.

I thought it was made out of plastic??

Hmm, looking at the sites, it just says “synthetic material’. Perhaps if you called the toll-free number, they could tell you.

Yak wigs

Something like this is more or less what I had in mind. I think “synthetic” will have to do as a descriptor.

Yak hair, though! How interesting. I hope I can remember that. Makes me really want to meet a yak.

Someone told me it’s made of real hair which are collected from barbershop..>_<