A great resource to help with this is a website that I came across: Skin Deep. This website takes all soaps, makeup, lotions etc... and looks at each ingredient. It will then tell you the effects (affects?) that the various ingredients have been known to have.
Let's take a look at our soap. When you look at the website each product receives a number grade with the better more natural things having lower numbers. The soap that I use (used) had a grade of 5! The company found ingredients in the soap that have been linked to cancer and lots of other things. YIKES!!! As much as I love my soap I don't love it enough to risk hurting my family.
I encourage you to take a look at the website to look how what you are using stacks up with other things. Again, you may think I'm crazy, but at least I'm a little healthier than I use to be :)