Q: Are women allowed to grow their nails for beauty purposes?
A: It is Sunnah for males and females to trim the nails and keep them neat and clean. To lengthen the nails without valid reason is impermissible. The nails should be clipped once every two weeks, preferably on a Friday before Jumuah, and should not be left for more than 40 days as stated in the Hadith.
And Allah Knows Best
Darul Ihsan Fatwa Dept.