On Jan. 15, the US Food and Drug Administration officially revoked its authorization of Red Dye No. 3, a widely used food coloring that has been under scrutiny for decades. The ban comes more than 30 years after studies linked high doses of the additive to cancer in lab rats, setting the stage for its eventual removal from the food supply.The decision was prompted by a 2022 petition citing a clause in the 1960 FD&C Act, which mandates the prohibition of any substance proven to cause cancer in humans or animals. Despite this, researchers note that the hormonal process leading to cancer in rats exposed to Red No. 3 does not occur in humans. Even so, the ban marks a long-overdue shift in food safety regulations, finally eliminating an additive that had been flagged for potential risks decades ago.The state of California banned the Red No. 3 dye and three other food additives in 2023, which gave manufacturers until 2027 to change their recipes. Then in 2024, California once again banned six more artificial dyes -- Blue 1, Blue 2, Green 3, Red 40, Yellow 5 and Yellow 6 -- from being served in public schools.Although the FDA authorization was revoked, companies have years to change how they make their products, so the carcinogen may be an ingredient in foods for a while. Here's everything to know about foods that use the synthetic red dye. What is Red No. 3?Red No. 3 -- also known as FD&C Red No. 3, erythrosine or Red 3 -- is a synthetic dye that is made from petroleum and adds a "bright, cherry-red color" to the products it is added to. In 1990, the FDA banned Red No. 3 in cosmetics, but no law barred the synthetic dye from being added to numerous types of foods and drinks for decades to come.The FDA cited the Delaney Clause as its reasoning behind the ban, which "prohibits FDA authorization of a food additive or color additive if it has been found to induce cancer in humans or animals."Although studies did show a link to cancer in laboratory rats, a link between the dye and cancer in humans has not been found."While there are studies noting carcinogenicity in male rats, the FDA noted in their announcement that the hormonal mechanism through which the dye caused cancer in rats is specific to the animal and does not occur in humans," Bryan Hitchcock, chief science and technology officer of the Institute of Food Technologists, told CNET.Hitchcock added that the studies used large amounts of the dye, which is more than what the average human would consume when eating the foods that contain it."Studies testing Red No. 3 for human safety have done so at amounts well above the average amount of consumption, as noted by various global regulatory bodies," he says. "The studies referenced by the FDA note that the rats were given roughly 200 times the likely maximum daily consumption of .25 mg/kg of body weight per day."What foods contain Red No. 3?CandyCakesCupcakesCookiesFrozen dessertsFrostingsIcingsCertain Maraschino cherriesCertain processed meats and meat substitutes Red No. 3 has previously been banned in other countries, including Australia. Ali Majdfar/Getty ImagesSome specific items that currently have Red No. 3 on its ingredient list are:Numerous types of Brach's candy, including Classic Jelly Beans, Spiced Jelly Beans and Conversation HeartsMorningStar Farms Plant-Based Bacon StripsGood Humor Strawberry Shortcake Frozen Dessert BarsPez candyAccording to a list compiled by Drugs.com, some of the drugs that have Red No. 3 in them include:AcetaminophenDoxycycline MonohydrateGabapentinVyvanseThe Environmental Working Group has compiled a searchable database of food products that use the now banned dye. As of Feb. 5, 2025, the site had collected 3,092 products that list Red No. 3 as an ingredient.When do companies need to remove Red No. 3 from products?Despite the ban, don't expect to see the Red No. 3 ingredient disappear from ingredient lists too quickly. According to the FDA, companies will have until 2027 or 2028 to remove it from their products."Manufacturers who use FD&C Red No. 3 in food and ingested drugs will have until January 15, 2027, or January 18, 2028, respectively, to reformulate their products," the FDA statement reads.What will replace Red No. 3?Givaudan Sense Colour, a manufacturing company that creates natural food and drink colorings, highlighted three possible alternatives to Red No. 3-- carmine, which is actually made from bugs; betacyanins, found in beetroots; and anthocyanins, derived from fruits and vegetables.California Assembly member Jesse Gabriel told NBC News that although synthetic dyes can be cheaper than other alternatives, he does not believe that the Red No. 3 ban will cause prices of the affected products to change."We don't expect the price of any food to increase," he told the outlet. As for alternative synthetic dyes,Red 40, which is not banned by the FDA, can also help achieve a bright red color, so it is also a possible alternative that manufacturers will choose.Are other chemical food colorings safe?After the Red No. 3 ban, there are now eight color additives approved by the FDA. They are FD&C Blue No. 1, FD&C Blue No. 2, FD&C Green No. 3, Orange B, Citrus Red No. 2, FD&C Red No. 40, FD&C Yellow No. 5 and FD&C Yellow No. 6.Hitchcock says that so far, studies show that there is not a notable risk to consuming these dyes."While science tells us that there is little to no risk in consuming other synthetic dyes, it is important that we continue to monitor and evaluate food ingredient safety," he says. "It is paramount that we continue to invest in more scientific research around the health of our foods to ensure safety and provide peace of mind for consumers."According to the FDA, the above dyes do not pose the same possible risks as Red No. 3, which is why they are still available for use in the US. But, some studies show possible links between certain dyes and potential health conditions. For example, some studies have linked Red 40 to hyperactivity, according to the Cleveland Clinic, but further studies are still needed to determine a direct link between the dye and the condition.When asked about the safety of other food dyes, Hitchcock highlighted the need for transparency from the FDA, which he says the agency has been addressing."We believe there needs to be a clear framework for post-market review for food additive safety," Hitchcock says. "The FDA is actively working to address this issue as seen in their Development of an Enhanced Systematic Process for the FDA's Post-Market Assessment of Chemicals in Food. IFT believes that the FDA needs to bring forward a post-market assessment of chemical food safety that is transparent, scientifically grounded, constituent informed and timely." If a drink looks too red to be natural, it probably is. vlad.plus/Getty ImagesThe bottom line on Red No. 3Red No. 3 has been fully banned in the US, but it will continue to be used in food for the next two years as manufacturers work to change their recipes. However, some manufacturers are making changes much more quickly than that.In an email to CBS News, Keurig Dr Pepper said that a "new formula" for Yoo-hoo Strawberry Flavored Drink, which is currently made with Red No. 3 to help achieve its color, "will be on shelves before the end of the year."