So it's obvious that braids, caps, veils and the like were great at preventing a lot of dirt and grime from daily life as you went about your labors but could peasants afford the gentler oil based soaps for their hair or was watered down lye soap the only real option for getting a deep clean in the hair?
There's always more to say, but take a look at this answer by /u/colevintage while you're waiting: