In the 1700's, men and women would only take baths twice a year, May and October.
Women kept their hair covered and men would shave their head because of lice and bugs.
The gentry (wealthy) class wore wigs made from wool.
They couldn't wash the wigs, so to clean them they would carve out a loaf of bread, put the wig in the shell, and bake them for 30 minutes.
This would make the wig big and fluffy.
Today, we often hear the phrase, "Here comes the Big Wig".
We often use to term to describe someone that appears to be, or is powerful and wealthy.