http://www.motherearthnews.com/natural-health/foamy-shampoo-bar-recipe.aspx
I made 3 pounds of soap today. I wash my thick hair with it too, no need for conditioner with this recipe... And we have hard water. Soap is easy to make. You can even make a form of lye from wood ash for making soap.
The best soap is made with lard or tallow. I recently found one recipe using bacon grease, but I use our bacon grease for frying ‘tators and sautéing some veggies.
I still have not tried making real liquid soap. I do make our liquid washing machine soap with a mix of grated bar soap, borax and washing soda. The recipe makes 5 gallons of concentrate, 10 gallons altogether for less the 10 bucks.