Question: What is the ruling on artificial eyelashes for the purpose of beautification for the husband?
Answer: “Artificial eyelashes are not allowed because they resemble artificially lengthening the hair, that is the hair of the head. For verily:
لعن النبي صلى الله عليه وسلم الواصلة والمستوصلة
The Prophet (ﷺ) has cursed the lady who lengthens her hair artificially and the one who gets her hair lengthened [Bukhari no. 5940]
If these lashes are from what I imagine now, in terms of putting black string which is like hair upon the eyelashes until they become apparent and appear as if they are a lot in order to beautify the eye, then this is from artificially lengthening the hair. The Prophet (ﷺ) cursed the one who does it to her head. As for if they are eyelashes with the meaning of changing the color of the hair of the eyelid, then this is not prohibited”
[Noor ‘ala Darb no. 644]
Faisal Ibn Abdul Qaadir Ibn Hassan