´It was narrated from Safiyyah bint Shaibah, that 'Aishah said:` "The Messenger of Allah [SAW] said: 'May Allah curse the woman who affixes hair extensions and the woman who has that done.'"
Explanation & Benefits
Hafiz Muhammad Ameen
It is as if the curse of Allah Ta'ala and His Messenger (sallallahu alayhi wa sallam) is upon the women who do such acts.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 5100