Can you wax your unibrow on Pesach?
If my understanding of your question is correct, you mean you ask if a woman may wax her eyebrows on Chol Hamoed. It is permitted for a woman to tweeze her eyebrows on Chol Hamoed. Waxing them should not be any different, therefore it is permitted.
Shar Hatzion 536-15, Shmiras Shabbos Khilchoso 66-108.