Finally got around to reading yesterday's (6 May) Wall Street journal. Just about everything shows up in the WSJ sooner or later. On Page D-1 there is an article on The Hypoallergenic Car which finally gets to the hypoallergenic point at nearly the end of the article. I am retired and detail only as a hobby, but if I were in the business, I'd consider utilizing the hypoallergenic approach and have a plan for attracting those customers. Think of all the people (and kids) who have allergies to dust, pollen, dander, etc. Utilizing the installation and subsequent maintainance of one of the items like Sharper Image's Ionic Breeze GP Car Air Purifiers as a part of a regular contractual hypoallergenic car detailing package, particularly among the "carriage trade" might increase business, reputation, and income. I did an Autopian search of the past year and did not find any items mentioning "hypoallergenic".