Carnauba wax
A natural plant wax scraped from the leaves of a Brazilian palm, used to coat and polish confectionery, fruit and tablets.
Subchronic, reproductive and developmental toxicity studies showed no adverse effects linked to carnauba wax intake.
What is it?
Carnauba wax is a hard, high-melting natural wax obtained from the dried leaves of the carnauba palm (Copernicia prunifera), grown mainly in north-eastern Brazil. The leaves are dried and the wax is beaten off and refined. It is one of the hardest natural waxes known, with a melting point of around 82-86 degrees Celsius.
What does it do?
It acts as a glazing agent, forming a thin, hard, water-resistant film on the surface of foods. This barrier reduces moisture loss, slows oxidation, improves shelf life, and gives a characteristic sheen or polish. It also prevents foods from sticking together.
Where you will see it
Most commonly found as the glossy coating on hard-shelled confectionery such as chocolate beans and sugar-panned sweets, as a surface treatment on fresh citrus fruit and apples to reduce moisture loss during storage, on coffee beans, and as a coating on pharmaceutical tablets and vitamin capsules. On a UK label it appears as 'carnauba wax' or 'glazing agent (E903)'.
What the science says
Absorption and metabolism
Studies show carnauba wax is practically not absorbed in the human gastrointestinal tract. It passes through largely intact, with negligible systemic exposure. The EFSA Panel on Food Additives reviewed available toxicological data and concluded that exposure at authorised use levels presents no identified health risk.
Carnauba wax is practically not absorbed in the human gastrointestinal tract; the EFSA re-evaluation found no evidence of systemic toxicity at levels used in food.
Dietary exposure estimates
EFSA estimated dietary exposure to carnauba wax across European population groups. Exposure is low because the wax is used only as a surface coating in small quantities, and because no numerical ADI was considered necessary given the very low absorption and absence of toxicological concern.
EFSA exposure modelling found dietary intake of E903 to be low across all population groups; no numerical ADI was set because the available evidence did not indicate a need for one.
Where it stands with the regulators
Who should be careful
No identified group needs to avoid it. Carnauba wax is plant-derived and contains no common allergens. People avoiding animal-derived waxes (such as beeswax, E901) sometimes specifically choose products carrying 'carnauba wax' or 'E903' on the label as a vegan-friendly alternative. No label warning is required.
The honest read
Carnauba wax has been used in food since at least the early twentieth century and has one of the longer regulatory track records of any glazing agent. It is derived from leaves rather than synthesised, it does not absorb into the body to any meaningful degree, and it has been reviewed by EFSA under the modern systematic re-evaluation programme without any concern being identified. Its presence on a label is a functional declaration of a surface coating rather than a signal of a novel or contested ingredient.
Related additives
Common questions
Is E903 banned in the UK?
No. Carnauba wax is approved for use in the UK as a glazing agent under the UK's retained food additive legislation, covering applications including confectionery, fresh fruit and coffee beans.
Is E903 vegan?
Yes. Carnauba wax is obtained from the leaves of the carnauba palm tree, making it entirely plant-derived. It is one of the few glazing agents that is vegan, in contrast to shellac (E904, insect-derived) or beeswax (E901).
What foods contain E903?
E903 is most commonly found on hard-shelled confectionery such as chocolate beans and sugar-coated sweets, on the surface of fresh citrus fruit and apples sold in supermarkets, on whole coffee beans, and as a coating on vitamin and supplement tablets. It appears on the label as 'carnauba wax' or 'glazing agent (E903)'.
Does carnauba wax get absorbed by the body?
Very little of it is. Studies reviewed by EFSA found that carnauba wax passes through the digestive tract largely intact, with negligible absorption into the bloodstream.
Sources
- EFSA ANS Panel: Scientific Opinion on the re-evaluation of carnauba wax (E 903) as a food additive, EFSA Journal 2012
- Commission Regulation (EU) 2025/651 of 2 April 2025 amending Regulation (EC) No 1333/2008 as regards glazing agents on certain fresh fruit and cassavas
- UK FSA approved additives and E numbers
- Food additives: Approval of certain glazing agents and carriers (AGRINFO Platform summary of EU 2025/651)
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