Hawzah News Agency –  Ayatollah Khamenei answers a question pertaining to the rules of the Wuḍū’.

Q: A person who wears artificial hair on his head and it is difficult for him not to wear it, is it permissible for him to wipe over it in wuḍū’?

A: If the artificial hair is in the form of a wig, it would be obligatory to remove it and do wiping. But if the artificial hair is implanted in the skin and its removal would entail difficulty and hardship which could not normally tolerated, it would be valid to do wiping over it.

 Source: https://www.leader.ir/en/book/32/Practical-Laws-of-Islam