Question
What is the ruling on a woman bleaching their eyebrows? The bleach does not harm the woman or remove the hair, it only lightens the color of the hair (essentially dying it).
Answer
If what is intended by bleaching is dyeing the eyebrows temporarily, then this is permissible. The only color prohibited to dye one’s eyebrows with is black.
The Messenger of Allah said to Abu Quhafah when his hair had turned white:
‘Change this with something, but do not use black.’
Narrated by Muslim in As-Sahih 3962