Subway says an ingredient dubbed the "yoga mat" chemical will be entirely phased out of its bread by next week.
The disclosure comes as Subway has suffered from an onslaught of bad publicity since a food blogger petitioned the chain to remove the ingredient.
The ingredient, azodicarbonamide, is approved by the Food and Drug Administration for use as a bleaching agent and dough conditioner. It can be found in a wide variety products, including those served at McDonald's and Starbucks and breads sold in supermarkets. But the petition gained attention after it noted the chemical was also used to make yoga mats.
Tony Pace, Subway's chief marketing officer, told the AP in a phone interview that the chain had started phasing the ingredient late last year and that the process should be complete within a week. Subway is privately held and doesn't disclose its sales figures. But it has apparently been feeling pressure from the uproar.
"You see the social media traffic, and people are happy that we're taking it out, but they want to know when we're taking it out," Pace said. "If there are people who have that hesitation, that hesitation is going to be removed."
He repeated that Subway was "happy to invite consumers back in who might've had hesitation."