How many tried shaving baby's head and the hair growth after that is significantly thicker and richer? And how many have tried and proven that this is just a myth?

This is an issue that still intrigues me till today. I was told that when I was young, I had very little hair. In my pictures I always had on girly hats because apparently I had very little hair and mistaken for a boy. Then my late grandma shaved off whatever I had in terms of hair and massaged olive oil into my scalp. Apparently hair grew and today, my older relatives attribute my long thick locks today because of that method. Not really scientific and don't know if it's relevant, just thought I'd share my story heehee.