Would you use a soap containing drain cleaner as a key ingredient?
If you won’t, then you probably won’t use any soap. One of the best drain cleaners is sodium hydroxide. The reason it is so good at cleaning drains is that it dissolves fat. But what happens when the fat dissolves? It turns into soap!
Sodium hydroxide (also known as lye), is traditionally made by boiling wood ash with water, the resulting compound was added to animal fat to make soap (any fat will work – olive oil, coconut oil etc).
The point is not to tell you how to make soap, but rather to take a critical look at ingredients before you discount them as scary because you don’t understand what the ingredients are.
BTW the photo is of some some that I made using orange essential oil, a dash of orange colouring, coconut oil and…sodium hydroxide