Ingredient ProfileFood dyeReviewed 2026-04-14

Red Dye No. 3

Red Dye No. 3: what it does in food, current safety notes, diet compatibility, and shopper guidance from IngrediCheck.

Aliases and label clues

Red Dye No. 3erythrosinered no. 3

Overview

Red Dye No. 3 is a synthetic food color historically used in candies, cake decorations, and bright red processed foods. It became the most important petroleum-based dye story once the FDA finally moved to revoke its food authorization.

Diet snapshot

Gluten freeYes
VeganYes
Low FODMAPYes
Dairy freeYes

What It Does in Food

Red Dye No. 3 is most commonly used as synthetic color additive in packaged food.

synthetic color additive

Category

Food dye

Evidence and Regulatory Summary

Red Dye No. 3 is now the clearest regulatory precedent in the synthetic-dye conversation because federal action is no longer hypothetical. That makes it useful as a marker for where the broader dye phase-out conversation started to become concrete.

Diet Notes

Red Dye No. 3 is less about allergy-style diet rules and more about whether you want to avoid a controversial color additive in products that usually have simpler alternatives. Parents tend to care most because the ingredient often shows up in kid-targeted categories.

Shopper Guidance

Use Red Dye No. 3 as an aisle-level filter. If a candy, frosting, or drink still relies on it during a phase-out window, that product is already telling you where it sits on reformulation urgency.

Get the app for clearer label decisions.

Scan labels, see what fits your food notes, and read the why in plain English.

IngrediCheck app