I'm assuming you're referring to the Paula's Choice site, yes?
I dug deeper into her SLS stance (http://www.cosmeticscop.com/skin-car...h-sulfate.aspx
), and I can see why she says it's SAFE to use. I didn't see where she referred to it as being gentle, but I didn't exactly scour the site (I feel like I'm guano-ing my own thread, LOL!). I would be VERY upset to find Paula referring to SLS as gentle after the research she cites in that link...
Full disclosure: I use Paula's Choice skin care products, and I'm reasonably happy with them. I tend to trust her, but I know there has been some question in the past about the information in her books being correct.
That list of humectants from her site matches up with what the Curl Chemist says on NaturallyCurly.com, but perhaps there is some semantic confusion with the words "water binding agent", since Paula's lists both silicone and aloe vera as such.