The question actually has validity. There are communities of nuns that shave their hair.
This custom was not part of communities of sisters. Sisters were tonsured. That is, their hair was cut very short at their investiture, but not shaved.
Nuns cut it at the investiture and later would run the clippers through it and cut down to a military cut. They did this because their male counterparts, the monks, shaved their heads.
Sisters did not shave their hair, because their male counterparts, the friars, never shaved our heads, until the late 20th century. We had a little bit of hair cut off at the crown of the head. We did not wear the corona, contrary to images of St. Anthony and the early friars.
The reason for the difference was that sisters did not always wear monastic habits. Many congregations of sisters wore the common dress of the widows or peasant women of the time. This did not always cover their hair. Gradually, some of these habits evolved so that the hair was completely covered.
Take for example, Elizabeth Ann Seton. Her hair was never covered. She wore a widow’s cap. She wore long hair, which was braided and knotted behind her head. Gradually, the bonnett got bigger, the hair got shorter and you could no longer see it. No one really knows why this happened.
In my own Franciscan family, the Third Order Regular Sisters did not have a monastic coif. They wore a tunic with a chord and a veil. As centuries passed, they gradually adopted the Benedictine look: the white coif with the black tunic and black veil with the white Franciscan chord. Obviously, they had to cut the hair shorter for the sake of hygene.
The nuns did clip their hair down to a peach fuzz, but not the sisters.
The custom died out during WW II. Superiors directed the nuns to let their hair grow. Often the nuns had to move to avoid the Nazis. They would take off their habits and put on street clothing. They had to do the same thing in Mexico after the revolution declared it illegal to wear a habit in public. After the crisis was over, many communities of nuns never returned to the shaved head. In places such as the US, the habit was not an issue, nor was safety an issue. Most American nuns continued the practice, but not the sisters… Most sisters never shaved their hair. It was about as short as the Beatles, if you remember them.
OK, I’m dating myself.
Fraternally,
Br. JR, OSF
