Food Dyes and Colors: A Calm Guide for Families
Last reviewed October 18, 2026 · How we grade evidence
In plain words: Artificial dyes add color, nothing else. Good trials show dye mixes can make some children a bit more hyperactive. That's a real but small effect, not a poison. The US plans a voluntary phase-out by the end of 2027. Until then, scanning labels and picking dye-free versions is the simplest step.
In USDA's database of US packaged foods, 55,330 products (about 1 in 8 with an ingredient list) contain at least one synthetic dye that FDA wants phased out.1 Candy leads by far, followed by snack cakes, cookies, ice cream, soda and baking decorations. Store brands are big users too: Target, Walmart and candy maker Ferrara own the most dyed products in the data.
The research story is steady and fairly calm. Controlled trials in children show that dye mixes can nudge hyperactivity up a little, more in some kids than others.234 There's no good evidence that the dyes still allowed cause cancer. The one banned over cancer findings, Red 3, involved a rat-only effect. White titanium dioxide is a different story: Europe banned it in 2022 because DNA damage couldn't be ruled out.5
At a glance
| Ingredient | Our take | Evidence | US products* |
|---|---|---|---|
| Red 40 (Allura Red) | Small behavior effect in some kids. Easy to skip; voluntary US phase-out by 2027. | Moderate | 37,465 |
| Yellow 5 (Tartrazine) | Small behavior effect in some kids; EU warning label. Easy to skip. | Moderate | 33,863 |
| Yellow 6 (Sunset Yellow) | Small behavior effect in some kids; EU warning label. Easy to skip. | Moderate | 23,836 |
| Blue 1 (Brilliant Blue) | Less studied alone than the red and yellow dyes. Part of the voluntary phase-out. | Limited | 29,567 |
| Blue 2 (Indigo Carmine) | Little research on it alone. Part of the voluntary phase-out. | Limited | 6,318 |
| Green 3 (Fast Green) | Rare in US foods; not approved in the EU. Simple to skip. | Very limited | 183 |
| Red 3 (Erythrosine) | Leaving US food by January 2027. Fine to skip now; no need to worry about past exposure. | Limited | 9,189 |
| Titanium Dioxide (E171) | Banned in EU food since 2022. Adds only color, so skipping it costs nothing. | Limited | 12,861 |
| Caramel Color | Some types carry trace 4-MEI. Soda's sugar is the bigger issue. | Limited | 29,013 |
Number of US packaged foods in USDA's Branded Foods database whose ingredient list names it. See each page for details.
Try a dye-free trial at home
If you think colors affect your child, try two to three weeks without artificial dyes. Swap the brightest items first: candy, sports drinks, fruit snacks, colored cereals and frosting. Notice sleep, mood and focus, then add one colored food back and watch. Share what you see with your pediatrician. Many families find it's an easy change; others see no difference, and that's useful to know too.
Don't forget medicines and toothpaste
The same dyes show up in children's liquid medicines, chewable vitamins and toothpaste. Ask your pharmacist for dye-free versions. Never stop a prescribed medicine to avoid a dye without talking to your doctor.
Frequently asked questions
Are food dyes bad for kids?
Artificial dye mixes can make some children a bit more hyperactive or less focused. The effect is small on average and bigger in some kids. They are not shown to cause cancer at permitted levels, apart from Red 3, which is being removed.
Which food dyes are being phased out in the US?
FDA asked companies to remove Red 40, Yellow 5, Yellow 6, Blue 1, Blue 2 and Green 3 by the end of 2027. It's voluntary. Red 3 is formally revoked, with a January 15, 2027 deadline for food.
Which dyes need a warning label in Europe?
Six colors: Red 40 (Allura red), Yellow 5 (tartrazine), Yellow 6 (sunset yellow), quinoline yellow, carmoisine and ponceau 4R must carry a warning about children's activity and attention.
How can I tell if a food has artificial dyes?
Look for names like Red 40, Yellow 5, Blue 1, "Lake," FD&C, or E-numbers like E129. Or scan the barcode with Let Me Scan That and we'll flag them.
Sources
- FoodData Central, Branded Foods dataset (release 2026-04-30). U.S. Department of Agriculture, Agricultural Research Service, 2026. Link
- Food additives and hyperactive behaviour in 3-year-old and 8/9-year-old children in the community: a randomised, double-blinded, placebo-controlled trial. Lancet (London, England), 2007. PubMed 17825405 · doi:10.1016/S0140-6736(07)61306-3
- Meta-analysis of attention-deficit/hyperactivity disorder or attention-deficit/hyperactivity disorder symptoms, restriction diet, and synthetic food color additives. Journal of the American Academy of Child and Adolescent Psychiatry, 2012. PubMed 22176942 · doi:10.1016/j.jaac.2011.10.015
- Potential impacts of synthetic food dyes on activity and attention in children: a review of the human and animal evidence (California OEHHA). Environ Health, 2022. PubMed 35484553 · doi:10.1186/s12940-022-00849-9
- Safety assessment of titanium dioxide (E171) as a food additive. EFSA J, 2021. PubMed 33976718 · doi:10.2903/j.efsa.2021.6585
This guide is for general education. It is not medical advice and does not replace advice from your doctor, pediatrician, allergist or registered dietitian. If you think you or your child reacted to a food, talk to a health professional. Research changes; we review these pages when new evidence or rules come out. Last reviewed October 18, 2026. Spotted an error? Email [email protected].