I know there have been some scare tactics out there about SLS but what about it's potential for irritation? DR. B says not to use SLS in several places.

I was cleaning out my skincare stash and found a bottle of Cetaphil gentle cleanser from the derm and was going to toss it in my shower, but it contains SLS of all things -- for sensitive skin! I have noticed Dr. B does not ever rec this cleanser in either of her versions of the book.
Is it because it could be harmful or the irration factor? What are your opinions of the Cetaphil or SLS?