Gordon Seliga, CGCS said: I wasn't familiar with the ingredient "ammonium laureth sulfate" so I did a little searching.It seems as though it's been around a while and there are many "wetting agents" that use this as an active ingredient. I found this link that describes some of the various types of "wetting agents" including ammonium laureth sulfate.http://www.diamondkgypsum.com/pdf/Aqua% ... tation.pdfAll the best,Gordon Seliga