kaolin is in a lot of spa mud mask type of things... it does sort of draw stuff out of the pores. I've never tried their stuff, mainly b/c the Keihl's store several blocks from me is filled with fur-coated, face-lifted women in the newest Burberry items, and it's clear to me that I can afford none of whatever it is they're purchasing!
I have used several Kiehl's products, including the drawing paste with azulene. It works very well to control my mild/moderate acne- although it does smell a little weird.. I only use the drawing paste when I get a major breakout, but I use their blue astringent toner daily to control oil. My cousin with severe acne has had a lot of success with Kiehl's as well. She uses the drawing paste on blemishes, blue toner twice daily, and rare earth face mask every other day. Kiehl's products are a little expensive but not as expensive as the other brands alongside them at Sak's or N-M. They also last a long time. My jar of drawing paste has lasted for two years and I will probably not run out until this summer.