Wa `alaykum as-salamu wa rahmatullahi wa barakatuh.
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
Dear sister in Islam, we would like to thank you for the great confidence you place in us. We implore Allah Almighty to help us serve His cause and render our work sincere for His Sake.
Regarding your question, Sheikh Ahmad Kutty, a senior lecturer and Islamic scholar at the Islamic Institute of Toronto, Ontario, Canada, who states,
The word used in the Hadith is nams in Arabic, which means plucking the eyebrows. The Prophet (peace and blessings be upon him) considered plucking as distorting the creation of Allah. This was the practice resorted to by prostitutes in the time of pre-Islamic jahiliyya (ignorance) and it is still used by women of loose morals.
However, scholars who have studied the issue in detail have concluded that if a person’s eyebrows are unusually thick or unwieldy, then he or she can straighten them out. This is not considered nams or plucking. Allah wants us to look neat and tidy, and by trying to appear neat and tidy we are not distorting Allah’s creation, rather we are only enhancing it.
Dr. Muhammad Bakr Isma`il, Professor of the Exegesis of the Qur’an at Al-Azhar University, adds,
It is known that plucking eyebrows is forbidden. However, some jurists permit light shaping of eyebrows if they are thick and hairy in a way that they harm the eye or appear so wide and thus displease the husband. If it pleases the husband that they are shaped lightly, there is nothing wrong in doing this just to please the husband. As for extreme shaping or plucking, it is not permitted.
Allah Almighty knows best.