Question:
Can a woman who usually shaves her legs etc, and waxes her brows/lips a few days before tevilla, do so during the 9 days?
Answer:
Yes she may, since she usually does it, it is considered needed for her tefilla.
Sources:
Halichos Baiso 25 ftnt. 67 in the name of R’S. Z. Auerbach zt”l, Shiurei Shevet Halevi -Sikum Halachos 198-20(7).