What Food Coloring Is Banned in the US? A Comprehensive Guide

The use of food coloring has a long and colorful history, from natural dyes derived from plants and minerals to the synthetic pigments created in laboratories. While vibrant red cakes, neon green candies, and electric blue beverages add excitement to our tables, not all food dyes are safe or legal. Some have been banned in the United States due to serious health concerns, including links to cancer, hyperactivity in children, and other adverse effects.

This article explores the food colorings currently banned in the United States, the reasons behind their prohibition, and what you need to know about safer alternatives. Whether you’re a health-conscious consumer, a parent concerned about children’s diet, or a food industry professional, understanding what’s banned—and why—can help you make more informed choices.

The Role of the FDA in Regulating Food Dyes

The U.S. Food and Drug Administration (FDA) is the primary federal agency responsible for overseeing the safety of food additives, including artificial and natural food colorings. Under the Food, Drug, and Cosmetic Act, any color additive used in food, medicine, or cosmetics must be approved by the FDA before it can be legally sold.

There are three categories of color additives regulated by the FDA:

• Exempt from certification: These are generally derived from natural sources such as plants, minerals, or animals (e.g., beet juice, turmeric, and caramel coloring).
• Subject to certification: These are synthetic dyes manufactured from petroleum or coal tar sources. Each batch must be tested and certified by the FDA to ensure purity and safety.
• Prohibited additives: These are dyes that have been banned completely due to health risks.

Over the years, the FDA has banned several artificial food dyes due to emerging research linking them to serious health issues. The regulatory process often involves reviewing scientific studies, consumer complaints, and independent evaluations by third-party researchers.

Key Food Colorings Banned in the United States

While many artificial dyes remain legal—such as Red No. 40, Yellow No. 5, and Blue No. 1—several others have been removed from the U.S. market. Here are the most notable food colorings that have been banned by the FDA.

1. Red No. 2 (Amaranth)

Red No. 2, also known as Amaranth (E123 in Europe), was one of the most widely used red dyes in the mid-20th century. It was found in maraschino cherries, gelatin desserts, cosmetics, and even meat products.

The ban came in 1976 after the FDA reviewed studies suggesting a possible link between Amaranth and cancer. Specifically, animal studies—particularly those conducted on female rats—showed an increased incidence of malignant tumors when exposed to high doses of the dye.

Following a public outcry and intense scrutiny, the FDA revoked certification for Red No. 2, effectively banning it from food and cosmetic products in the U.S. Although the European Union did not completely ban Amaranth, several other countries followed the U.S. lead.

2. Red No. 32 (Scarlet GN)

Red No. 32, or Scarlet GN, was another synthetic red dye used in food and pharmaceuticals. It was banned in the 1950s due to concerns over its safety.

While not as widely known as Red No. 2, Scarlet GN was associated with potential mutagenic effects—meaning it could damage DNA and potentially lead to cancer. The FDA determined that the available safety data was insufficient and removed its certification, leading to its de facto ban.

3. Violet No. 1 (Methyl Violet)

Used primarily in cosmetics and as a textile dye, Violet No. 1 (Methyl Violet) was briefly permitted in certain food products in the early 1900s. However, it was soon banned due to toxicity concerns.

Studies indicated that Methyl Violet could cause irritation, allergic reactions, and even organ damage with prolonged exposure. It also showed potential carcinogenic properties in laboratory tests, prompting the FDA to prohibit its use in food products.

4. Green No. 2

Green No. 2 was an early artificial green dye used in candies and beverages. It was banned not necessarily for direct toxicity, but because early colorants weren’t rigorously tested for purity, and many contained dangerous contaminants such as lead and arsenic.

As food safety standards evolved, Green No. 2 failed to meet modern requirements and was phased out of use.

5. Orange No. 1 and Orange No. 2

In the 1950s, Orange No. 1 and Orange No. 2 were used to color citrus-flavored drinks, candies, and breakfast cereals. Concerns arose when animal studies revealed that high doses of Orange No. 2 were associated with liver tumors in rats.

Because of this potential carcinogenicity, the FDA banned Orange No. 2 in 1968. Orange No. 1 was also removed due to safety concerns and widespread contamination issues in manufacturing.

6. FD&C Yellows No. 1, No. 2, No. 3, No. 4 (before modern reformulation)

Several early versions of yellow dyes were banned or reformulated due to toxicity. While modern Yellow No. 5 (Tartrazine) and Yellow No. 6 are still legal, earlier iterations such as FD&C Yellow No. 1 and No. 4 were discontinued because of impurities and adverse health effects.

The original FD&C Yellow No. 2 (not to be confused with modern Yellow No. 2, which is not currently in use) was also banned due to reports of gastrointestinal distress and allergic reactions.

Current Controversies: Are More Dyes at Risk of Being Banned?

Although no major synthetic dyes have been banned in the U.S. in recent decades, ongoing research and advocacy keep the safety of artificial food coloring under review.

Links to Hyperactivity and ADHD in Children

One of the biggest controversies surrounding food dyes today is their potential link to behavioral issues in children, including attention deficit hyperactivity disorder (ADHD). The most studied dyes in this context are:

• Red No. 40 (Allura Red AC)
• Yellow No. 5 (Tartrazine)
• Yellow No. 6 (Sunset Yellow)

A landmark 2007 study published in The Lancet concluded that mixtures of these artificial colors and the preservative sodium benzoate were associated with increased hyperactivity in children. Although the doses used were higher than average daily intake, the findings sparked widespread concern.

As a result, the European Union now requires a warning label on foods containing these dyes: “May have an adverse effect on activity and attention in children.” In contrast, the FDA acknowledges the study but maintains that there is insufficient evidence to justify similar labeling or a ban in the U.S.

Contamination Risks

Another concern with synthetic food dyes is the potential for carcinogenic contaminants, such as benzidine and 4-aminobiphenyl, which can be present as byproducts in the manufacturing process.

For example, some batches of Yellow No. 6 have been found to contain low levels of 4-aminobiphenyl, a known carcinogen. While the FDA allows trace amounts under strict limits, critics argue that any exposure to carcinogens in food—especially for children—should be minimized or eliminated.

Internationally Banned Dyes Still Legal in the U.S.

One of the most controversial aspects of food dye regulation in the U.S. is that several dyes banned in other countries remain legal here.

Examples of Internationally Banned Dyes Used in the U.S.

This regulatory divergence reflects differences in risk assessment, political pressure, and public health policy between the U.S. and other nations.

Why the Discrepancy?

The FDA operates under a precautionary standard that requires conclusive evidence of harm before removing an approved additive. In contrast, European agencies like the European Food Safety Authority (EFSA) often apply the precautionary principle, which allows bans or restrictions even on suspected—rather than proven—risks.

Additionally, consumer advocacy has been stronger in Europe. Public demand for “clean labels” has pressured food manufacturers to voluntarily eliminate synthetic dyes. In the U.S., while awareness is growing, large-scale reformulation has been slower.

Are Natural Food Colorings Safer?

With increasing skepticism about artificial dyes, many consumers are turning to natural alternatives. But are they truly safer?

Common Natural Food Colorings

Natural colorings are derived from plant, mineral, or animal sources. Some popular options include:

• Beet Juice: Provides a vibrant red or pink hue, used in ice creams and fruit pies.
• Carotenoids (from carrots or paprika): Offer yellow to orange tones, commonly used in cheese and beverages.
• Chlorophyllin: Derived from green plants, used to color minty candies and toothpaste.
• Annatto (from achiote seeds): Produces yellow-orange coloring in popcorn, cheese, and butter alternatives.
• Turmeric (Curcumin): Offers a bright yellow color used in mustard and curry powders.

These natural dyes are generally recognized as safe (GRAS) by the FDA and are not subject to batch certification. However, “natural” does not always mean “risk-free.”

Potential Risks of Natural Dyes

While most natural colorings are well-tolerated, some can cause allergic reactions or digestive sensitivities. For instance:

Annatto

Some individuals report allergic reactions to annatto, including hives, itching, and even anaphylaxis in rare cases. It’s important to read labels if you’re sensitive to plant-based allergens.

Cochineal Extract (Carmine)

This red dye is made from crushed cochineal insects. While it’s natural, it can trigger severe allergic reactions in some people. It’s also controversial among vegetarians and vegans. In 2012, after pressure from consumer groups, the FDA ruled that carmine must be explicitly labeled on ingredient lists—no longer hiding behind vague terms like “artificial color.”

How to Identify Banned or Risky Food Dyes

Knowing how to read food labels is essential for avoiding banned or potentially harmful dyes.

Check the Ingredient List

Look for:

• Artificial colors listed as “FD&C” followed by a color and number (e.g., FD&C Red No. 40).
• Vague terms such as “artificial colors,” “color added,” or “may contain artificial colors.”
• International names like “Allura Red,” “Tartrazine,” or “Sunset Yellow.”

If these are present, especially in products marketed to children, further research may be warranted.

Use of Apps and Databases

Several consumer apps (like EWG’s Healthy Living or Fooducate) allow you to scan food labels and get safety ratings for ingredients, including dyes. These tools often highlight banned substances, allergens, and controversial additives.

The Future of Food Coloring in the U.S.

Consumer trends are shifting. According to market research, more than 60% of U.S. consumers prefer foods with natural ingredients and are willing to pay more for them. In response, major brands like Kraft, General Mills, and Nestlé have reformulated popular products—such as mac and cheese and candy—to replace synthetic dyes with natural alternatives.

What Companies Are Doing

In 2015, Kraft removed artificial dyes from its iconic Mac & Cheese line, replacing Yellow 5 and Yellow 6 with paprika, turmeric, and annatto. The change was driven by a petition launched by a mom that gained over 300,000 signatures.

Similarly, General Mills phased out artificial colors from its Fruit Gushers and Chex Mix products, citing consumer demand for cleaner labels.

Legislative Pressure

Advocacy groups such as the Center for Science in the Public Interest (CSPI) continue to petition the FDA to ban or more strictly regulate synthetic dyes. In 2011, CSPI filed a petition calling for the removal of eight artificial dyes, including Red No. 40 and Yellow No. 5, based on behavioral and carcinogenicity data.

While the FDA has not acted decisively, the petition remains pending, and pressure continues to mount.

How to Navigate Food Coloring Safely

To protect your health and that of your family, consider these strategies:

1. Limit Processed Foods

Highly processed foods like candies, sodas, snack cakes, and breakfast cereals are the most likely to contain synthetic dyes. Choosing whole, unprocessed foods naturally reduces exposure.

2. Choose Certified Organic Products

The USDA Organic standards prohibit the use of artificial food dyes. Products labeled “organic” must use only natural colorings, making them a safer choice.

3. Learn the Natural Alternatives

Many vibrant colors can be achieved naturally:

• Blue: Blue spirulina or butterfly pea flower extract
• Red: Beet powder or elderberry juice
• Green: Matcha, spinach powder, or chlorophyll drops
• Yellow: Turmeric or saffron

4. Stay Informed

Follow updates from reputable sources like the FDA, EFSA, and consumer advocacy organizations. Regulatory decisions can evolve as new science emerges.

Conclusion

While several food colorings have been banned in the United States—most notably Red No. 2, Orange No. 2, and various early synthetic dyes—the debate over artificial coloring safety is far from over. Dyes like Red No. 40, Yellow No. 5, and Yellow No. 6 remain legal in the U.S. despite being restricted or labeled in other countries due to health concerns.

The disconnect between U.S. policy and global practices highlights the need for continued consumer awareness and advocacy. By understanding what’s banned, why it was banned, and how to make safer choices, you can take control of your diet and reduce potential health risks.

In an era of increasing transparency and demand for clean food, the future may see more manufacturers moving away from artificial dyes altogether. Until then, informed choices and vigilant label-reading remain your best defense against potentially harmful additives.

Why is Red Dye No. 3 banned in California but not nationwide in the U.S.?

California has taken independent regulatory action on Red Dye No. 3 (also known as erythrosine) based on recent scientific studies linking it to potential health risks, particularly hyperactivity in children and possible carcinogenic effects observed in animal studies. In 2023, California passed Assembly Bill 418, which prohibits the manufacture, sale, and distribution of food products containing Red Dye No. 3 starting in 2027. This decision was informed by the California Office of Environmental Health Hazard Assessment (OEHHA), which added Red Dye No. 3 to its list of chemicals known to cause cancer under Proposition 65.
Despite California’s ban, the U.S. Food and Drug Administration (FDA) has not implemented a nationwide prohibition. The FDA maintains that Red Dye No. 3 is safe when used in accordance with current regulations, which limit the amount allowed in food products. However, due to public concern and industry shifts toward natural alternatives, many manufacturers are proactively removing Red Dye No. 3 from their products even outside of California. This discrepancy highlights how state-level actions can precede or exceed federal regulations in response to emerging health concerns.

Is Red 40 banned in the United States?

No, Red 40 (Allura Red AC) is not banned in the United States and remains one of the most widely used synthetic food colorings by the food industry. Authorized by the FDA for use in food, drugs, and cosmetics, Red 40 is commonly found in soft drinks, candies, baked goods, and snacks. The FDA has conducted numerous evaluations and concluded that, at current usage levels, Red 40 does not pose a significant health risk to the general population.
However, Red 40 has been the subject of scrutiny due to studies suggesting it may contribute to hyperactivity and behavioral issues in sensitive children, particularly those with ADHD. While the European Union requires warning labels on foods containing Red 40 and other artificial colors, the U.S. does not. Consumer advocacy groups continue to push for stricter oversight, but as of now, the FDA considers Red 40 safe when used as directed, and it remains legal across the country.

What international food colorings are banned in the U.S.?

The United States does not typically ban food colorings that are approved elsewhere; instead, it regulates only those color additives that are intentionally used in foods consumed domestically. Most synthetic dyes used outside the U.S. are not automatically permitted unless they undergo a rigorous approval process by the FDA. For instance, food colorings like Ponceau 4R (E124), commonly used in Europe and other countries, are not approved for use in the U.S. and are therefore banned from American food products.
The absence of approval is not always due to safety concerns alone. Often, dyes like Ponceau 4R are not used in the U.S. simply because manufacturers have opted for alternatives already approved under the Federal Food, Drug, and Cosmetic Act. The FDA’s certification program requires pre-market approval for each synthetic color additive, and foreign dyes must meet the same safety and quality standards as those developed domestically. Thus, while not explicitly “banned” in a punitive sense, many international colorings remain unavailable in the U.S. market due to lack of FDA authorization.

Why is Yellow No. 5 a controversial food dye in the U.S.?

Yellow No. 5, also known as tartrazine, is permitted for use in the U.S. food supply but has drawn controversy due to reported links with allergic reactions and behavioral changes in children. While the FDA recognizes Yellow No. 5 as safe for most people, studies have indicated that it may trigger hypersensitivity reactions in individuals with asthma or aspirin sensitivity. Additionally, some research has suggested an association between Yellow No. 5 and increased hyperactivity in children, prompting concern among parents and health advocates.
Despite these concerns, the FDA has not banned Yellow No. 5, citing insufficient consistent evidence to warrant removal. However, the agency does require that Yellow No. 5 be clearly listed on ingredient labels so consumers can make informed choices. In Europe, products containing Yellow No. 5 must carry a warning label about potential effects on activity and attention in children—a requirement not mirrored in the U.S. This divergence underscores the differing regulatory approaches and consumer expectations regarding food additive transparency.

Are there any naturally derived food colorings that are banned in the U.S.?

While most banned food colorings in the U.S. are synthetic, a few naturally derived color additives have also faced restrictions. For example, certain natural colorants derived from unapproved biological sources or those contaminated with harmful substances may be prohibited. Additionally, natural colorings that are not manufactured in compliance with FDA regulations—such as cochineal extract (made from crushed insects)—are not outright banned but require clear labeling due to allergenic potential.
In 2009, the FDA mandated that products containing cochineal extract or carmine must be explicitly labeled to inform consumers, after reports of severe allergic reactions. While still permitted, this regulation reflects the FDA’s approach to managing natural colorings that pose health or ethical concerns. Thus, while “natural” does not automatically mean “approved,” most plant-based or mineral-derived colorants—like beet juice, turmeric, and annatto—are widely accepted and considered safe under current standards.

What role does the FDA play in banning food colorings in the U.S.?

The U.S. Food and Drug Administration (FDA) is the primary regulatory body responsible for evaluating and approving all food color additives used in the United States. Before any synthetic or natural coloring can enter the food supply, it must receive FDA certification, which involves rigorous testing for safety, purity, and stability. The FDA continuously monitors scientific literature and adverse event reports and has the authority to revoke approval if new evidence indicates a risk to public health.
When the FDA determines that a food dye poses a potential hazard, it may initiate a ban or restrict usage levels. For example, the agency banned FD&C Orange No. 1 in the 1950s after animal studies revealed toxic effects. The FDA also maintains a certification program for synthetic dyes, requiring each batch to be tested before use. This proactive oversight ensures that only color additives meeting strict safety standards are allowed, though regulatory decisions sometimes lag behind emerging research or state-level actions.

How do U.S. food coloring regulations compare to those in the European Union?

Food coloring regulations in the United States and the European Union differ significantly in philosophy and enforcement. The EU follows the precautionary principle, which allows regulators to restrict or ban additives when scientific uncertainty about safety exists. For example, the EU requires warning labels on foods containing certain azo dyes like Yellow 6 and Red 40, linking them to hyperactivity in children. In contrast, the U.S. FDA requires conclusive evidence of harm before taking regulatory action, which results in fewer restrictions on synthetic dyes.
Additionally, the EU has banned or restricted several synthetic colorings permitted in the U.S., including Sunset Yellow (E110) and Ponceau 4R (E124), due to concerns over behavioral effects and allergenicity. European countries also encourage the use of natural alternatives and have stricter limits on acceptable daily intake (ADI) levels. These differences underscore a broader divergence: the EU prioritizes consumer protection amid uncertainty, while the U.S. often waits for stronger evidence before changing policy, relying heavily on industry compliance and post-market monitoring.