In February 2009, the Consumer Product Safety Improvement Act imposed regulations of several substances and banned the manufacture for sale, distribution in commerce, or import any children's toy or childcare article that contains "concentrations of more than 0.1 percent of" di-(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), or benzyl butyl phthalate (BBP).[6] Michael Kamrin, who was on ACSH's Board of Scientific and Policy Advisors, published a critical review in 2009 in the Journal of Toxicology and Environmental Health, saying that phthalates were safe.[7] ACSH's advocacy on the issue extends back to 1999, when it worked with former U.S. Surgeon General C. Everett Koop to advocate for the ingredient used in many soft plastics.[8]