It is narrated from Sayyidah Asma' bint Abi Bakr (may Allah be pleased with her) that a woman came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah! I married off my daughter, and she fell ill and her hair fell out, and her husband keeps coming to me. May I join extensions to her hair? So he (peace and blessings be upon him) reviled the woman who joins hair and the woman who has it joined.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20728