Did you even read the wiki article you linked to? The Babylonians and others invented “proto-soaps” and “soap-like materials” but what we regard as “true soap” wasn’t invented until much later, and if the Romans were correct that it came from Gaul, then that would make it Celtic in origin. Try actually reading the actual sources you linked to.
I heard you the first time.
The barbarians didn’t invent soap.
Did you even read the wiki article you linked to? The Babylonians and others invented “proto-soaps” and “soap-like materials” but what we regard as “true soap” wasn’t invented until much later, and if the Romans were correct that it came from Gaul, then that would make it Celtic in origin. Try actually reading the actual sources you linked to.