Triclosan has been used safely and effectively for years in hospital and consumer settings, according to the American Cleaning Institute, responding to attacks against the antibacterial chemical. "These products are safe to use," said Brian Sansoni of ACI. "They are safely used by millions of people in everyday hygiene routines. And triclosan in particular has been one of the most thoroughly researched ingredients over the past four decades." Studies using animals are skewed because they used uncommonly high levels of triclosan, he added.