Shaving one’s hair could explain a Gemara that Kimhi merited to have 7 sons be Cohanim Gedolim in the Beis HaMikdash. The Gemara makes an observation that the walls of her house never saw her hair.”
We have had this discussion in the past. I never quite understood this story. Wasn’t it Kimchis herself who (responding to WOMEN asking her why she had such amazing/gorgeous/successful children) posited her belief that the reason for her mazel with outstanding sons was because the walls of her home never saw her hair? If that opinion originated with HER, then that was a nice opinion, but not Halacha from the Talmud to convince women to cover their hair even in the complete privacy of their own bathroom. It is laudable to be very tzniusdig, and the Torah is obviously teaching us that by this maaseh, but the degree to which she took the concept was not one that is expected as the norm, and women whose walls DO see their hair, can also be tzniusdig and worthy of having wonderful children.
Shaving the hair does not make the woman’s hair invisible, btw. Unless her hair falls out and she is totally bald, she still has a peach fuzz of hair on her scalp and has to cover it. This brings me to another question (and I mean no disrespect by it, I genuinely am curious). If a woman suffers from alopecia and is completely bald (or had lo alainu chemo and lost her hair), does she still have a chiyuv to cover her head, as there is no hair there to cover? Is it the hair alone or also the scalp that is considered erva?