Narrated by ‘Abdullah: Allah has cursed those women who practise tattooing and those who get themselves tattooed, and those who remove their face hairs(1), and those who create a space between their teeth artificially to look beautiful, and women changing the features created by Allah. Why then should I not curse those whom the Prophet has cursed? And that is in Allah’s Book. i.e. His Saying: ‘And what the Apostle gives you take it and what he forbids you abstain (from it).’ (59.7)
(1) It would be permitted for a woman to remove a beard or a moustache that appears on her face. Even though it is facial hair, but since it is to stop women from resembling men, it is permitted. This is the opinion of the majority of scholars, in fact they have said it is recommended, not just permitted. The same will be to bleach this hair instead.
If the eyebrows are linked in between, it would be permissible to remove the excess hair from in between to separate them [i.e. the hair above the nose]. The reason for this is that linked eyebrows are looked upon as a defect, hence it would be permissible to remove it.