The Messenger of Allah ﷺ forbade a woman from shaving her head.
أخبرنا محمد بن موسى الحرشي قال حدثنا أبو داود قال حدثنا همام عن قتادة عن خلاس
نهى رسول الله ﷺ أن تحلق المرأة رأسها
[hasan] Reported by Tirmidhi, Hajj, chapter on the dislike of shaving the head for women, no. 914, from Muhammad bin Musa Basri, and he said, "There is confusion in it." It is also in Kubra, no. 9297. The hadith has corroborating narrations in Abu Dawud, no. 1985, and elsewhere, and the hadith of Abu Dawud was graded hasan by Hafiz in Talkhis Habir, 2/261.