Polysorbate 80 (E433)
Polysorbate 80 is an emulsifier that allows oil and water to mix; it is used in ice cream, sauces, cosmetics and some medicines. Regulators have found it safe at permitted levels. In recent years, findings from animal experiments suggesting that emulsifiers may affect the gut microbiota have attracted attention; however, the effect in humans is not yet clear.
Risk range
1 is the lowest and 10 the highest risk. The range depends on the amount used, whether the product is rinsed off and how it is used. The Temiz İçerik app uses the same ranges.
Because it is taken by mouth and research on emulsifiers and the gut microbiota is ongoing, the range for food is slightly higher than for cosmetics.
It is used at low concentrations on the skin and is well tolerated; the upper end is for ethoxylation residues and rare irritation on sensitive skin.
What is polysorbate 80 and what does it do?
Polysorbate 80 is made by reacting sorbitol (a sugar alcohol) and oleic acid (a fatty acid abundant in olive oil) with ethylene oxide. One end of the resulting molecule is attracted to water and the other to oil. This lets it prevent the oil and water phases from separating, giving the product a smooth, uniform texture.
In food it helps ice cream stay creamy and reduces the formation of ice crystals, and keeps oil from separating in sauces. In cosmetics it is used to dissolve essential oils and fragrance in water (as a solubiliser).
Which products contain it?
- Ice cream, whipped cream, ready-made sauces and some baked goods
- Chewing gum and some confectionery
- Toners, micellar waters, facial cleansers and creams
- Some medicines, vitamin drops and vaccines (as an excipient)
Is it harmful? The scientific assessment
EFSA has re-evaluated polysorbates (E432–E436), set a group acceptable daily intake (ADI) and saw no safety concern in the permitted uses. In Türkiye, E433 may be used in certain foods and in limited amounts under legislation aligned with the EU.
The debate centres on the gut. Some mouse studies published since 2015 have shown that emulsifiers such as polysorbate 80 and carboxymethylcellulose can alter the gut microbiota and increase low-grade intestinal inflammation in susceptible animals. It is not yet clear to what extent the doses used in these experiments correspond to the human diet or whether the results can be transferred to humans; human studies on the subject are ongoing.
In cosmetics, polysorbate 80 has been found safe in independent assessments. Because it is made by ethoxylation, it may contain trace residues of 1,4-dioxane; reputable manufacturers minimise this through purification.
Who should be careful?
- People with inflammatory bowel disease (Crohn's disease, ulcerative colitis): Some experts recommend limiting ultra-processed foods containing emulsifiers; you can consult a doctor about your eating plan.
- People with a polysorbate allergy: Although very rare, hypersensitivity has been reported, especially to polysorbates in medicines and vaccines.
- People with sensitive skin: Irritation can occasionally occur with cosmetics.
What to do when you see it on a label
Seeing polysorbate 80 in cosmetics is not a cause for concern. In food, E433 is usually a marker of ultra-processed products; eating these occasionally is fine, but they are not recommended as the foundation of your diet. For other additives with a similar role, see the pages on lecithin, mono- and diglycerides and carrageenan.
Frequently asked questions
Does E433 harm the gut microbiota?
Negative effects have been observed in mouse studies; in humans, the evidence is still insufficient. EFSA considers it safe at permitted levels.
Is polysorbate 80 halal or vegan?
Oleic acid can come from plant or animal sources. As the source varies from product to product, definitive information should be obtained from the manufacturer.
Is the polysorbate 80 in vaccines dangerous?
It is present in vaccines in very small amounts as an excipient and is considered safe. People who have previously had a serious allergic reaction should inform their doctor before vaccination.
Sources
Updated: 2026-10-11 · How we score
This page is for general information and is not personal medical advice. Warnings on the product label and the advice of a health professional always come first.