Ancient Shampoo (Part 1)

Have you ever wondered what people used as shampoo back in the day? Well, before all of the colourful and great smelling shampoos we have today, people still needed to wash their hair.
However, they didn’t have access to the awesome ingredients we have today like Quaternium-15 and Polyquaternium-10, whatever the hell those are.
 
 
Well, in ancient…