Sunset Yellow FCF

No. Sunset Yellow FCF is authorised in the EU under Regulation (EC) No 1333/2008, subject to maximum permitted levels and a mandatory warning label. It is approved in the US as FD&C Yellow No. 6, but in April 2025 the FDA announced it is working with manufacturers to voluntarily remove Yellow No. 6 and other synthetic dyes by the end of 2026 — a phase-out rather than a legal ban.

Because of the 2007 “Southampton study” (McCann et al.), which linked mixtures of six colours including Sunset Yellow to increased hyperactivity in some children. Since 2010 EU law requires foods containing it to state the colour “may have an adverse effect on activity and attention in children” (drinks over 1.2% alcohol are exempt). EFSA judged the underlying evidence limited, so the label is a precaution rather than proof of harm.

EFSA lowered Sunset Yellow’s Acceptable Daily Intake to a temporary value in 2009 after concerns from animal studies. After reviewing new data, in 2014 EFSA revised the ADI to 4 mg per kg of body weight per day and concluded that estimated consumer exposure is well below this level for all age groups.

It is synthetic. Sunset Yellow FCF is a man-made azo dye produced from petroleum- or coal-derived chemicals, and it is the same substance certified in the US as FD&C Yellow No. 6. It is not derived from any natural or plant source.

By composition, yes — Sunset Yellow is a synthetic dye made from petrochemical raw materials with no animal-derived ingredients, so it is generally regarded as suitable for a vegan diet. Some strict vegans nonetheless avoid synthetic dyes because such additives undergo animal safety testing.

Sunset Yellow gives an orange-yellow colour and appears in soft and energy drinks, sweets, snack foods, desserts, marmalades and some sauces. In the EU it must be declared as “Sunset Yellow FCF” or “E110” and carry the activity/attention warning, so checking the label is the reliable way to know.

Yes — it contains no animal-derived material. It is a synthetic azo dye made from petroleum-derived precursors. Some vegans still avoid synthetic azo colours because of the animal testing behind their safety assessments. The same applies to a vegetarian diet.

Yes — the additive itself contains no gluten. A gluten-free claim belongs to the finished product, though — check the pack, not the additive.

It is a synthetic azo dye made from petroleum-derived precursors and contains no animal-derived material, so the additive itself is not inherently non-halal. Certification applies to a finished product rather than to an additive, so a halal certification mark on the pack is the authoritative signal.

Sunset Yellow FCF is authorised in the EU with an EFSA acceptable daily intake. Foods containing it must warn that it "may have an adverse effect on activity and attention in children", and like other azo dyes it is linked to pseudo-allergic reactions such as urticaria, particularly in people sensitive to aspirin or NSAIDs.