Can we buy wigs?

 Can we buy and sell human hair?

No, it is not allowed

There is nothing wrong with buying wigs made of non-human hair to practice doing haircuts and hairstyles

Complete Answer :https://islamqa.info/en/answers/397206/ruling-on-buying-wigs-to-practice-doing-haircuts-and-new-hairstyles-and-the-ruling-on-buying-and-selling-human-hair