Scotchguard™ advertisement, c. 1961

Putting the Genie Back in the Bottle: Scotchgard™


Scotchgard™ is a 3M product that makes fabrics stain resistant and somewhat water repellent. 3M completely reformulated Scotchgard in May 2000. It turned out that the chemicals used in earlier versions of  Scotchgard were dangerous and persisted in the environment for a long time. Those chemicals were perfluorinated compounds (“PFASs”), including perfluorooctane sulfate (“PFOS”) and perfluorooctanoic…