Is red dye in M&M's safe? Unpacking the Controversy and Science
                                
                                
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                                    4 min read                                
                            
                                In 1976, Mars temporarily removed red M&M's from production due to public concern over a different red dye. Today, many still question if red dye in M&M's is safe, often focusing on the commonly used Red Dye 40, known as Allura Red AC.