Natural Soaps And Shampoos Are There Any Shampoos/soaps That Are Completely Natural?

Are there any shampoos/soaps that are completely natural? - natural soaps and shampoos

Camping on a lake, and the shower only our solar system, shower, do you just want to know what shampoo, conditioner, are soap products that are biodegradable and all natural or whatever it takes to secure it for use on the lake .