"There had been such a consumer response that we felt it necessary to actually inform consumers that we had made the change," Weaver Popcorn CEO William Weaver.
And though the industry pointed out massive amounts of diacetyl are involved in the cases and their products remain safe, on Wednesday three more companies that produce some of nation's most popular brands said they'd change their formulas too.
Consumers can expect the change to arrive on store shelves in the next year.
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