Dear Epfl1,
I understand in Russia, from olden times to even present day, many families shave the heads of their children. Moreso, it a common practice done to both girls and boys, and many shaved during the summer. I believe presently, its to strengthen the hair, so it may be more profuse. As a young boy in Russia, my father had it done to him. I'm only responding to allow you know it's not uncommon, even now days.
Tania