It *sounds* like, from reading the label, that the Dr. Bronners soap would be fine. Since it's described as "Castile soap" and what you're trying to avoid is detergent. I personally used dissolved soap flakes (which is a messy pain, BTW! ) because what I had was a box of soap flakes.
Confidence is that feeling you have right before you do something really stupid.
) because what I had was a box of soap flakes. 
