Phenoxyethanol is a preservative that stops bacteria, yeast and mold from growing in water-based products. The EU allows it at up to 1%, and the EU's scientific safety committee reviewed that limit in 2016 and considered it safe, including for young children. Allergic reactions to it are possible but uncommon.
What does phenoxyethanol do in a product?
Phenoxyethanol's main job is preservation. The EU's Scientific Committee on Consumer Safety (SCCS) describes it as a broad-spectrum preservative with activity against many kinds of bacteria, as well as yeast and mold.2 Preservatives matter in creams, serums and cleansers that contain water, because those products are opened, touched and used over weeks or months. Phenoxyethanol is also a solvent, so it often appears in blends with other preservatives. The same opinion notes that it's used as a fragrance ingredient and turns up in non-cosmetic products such as household cleaners and detergents.2 In other words, you're likely to meet it across many everyday products, not just skincare.
What do regulators say?
In the EU, phenoxyethanol is on the list of permitted preservatives with a maximum concentration of 1.0% in the finished product.1 In 2012, the French medicines agency ANSM sent the European Commission a risk assessment that proposed a lower limit of 0.4% in products for children under three, and no use in products for the diaper area. Other member states raised similar concerns, and the Commission asked the SCCS to look again. In its 2016 opinion, the committee concluded that phenoxyethanol is safe as a preservative at up to 1.0%. It also judged that its safety margin for children covers that younger age group.2 The committee noted that its assessment covered exposure from cosmetics only, not from other sources.2
Can phenoxyethanol cause skin reactions?
It can, but allergy appears uncommon. In an animal test designed to detect skin allergens, phenoxyethanol did not cause sensitization. Among 6,932 patients patch tested through a German, Swiss and Austrian monitoring network, 0.24% reacted to it. In another group of 4,995 patients, the figure was 0.14%. The SCCS summarized the overall rate of skin sensitization as low.2 A 2019 review described phenoxyethanol as a rare sensitizer.3 Undiluted phenoxyethanol was a mild irritant on rabbit skin and an irritant in rabbit eyes. Those tests used the pure chemical, not the much lower levels in products.2 If you've had a confirmed allergic reaction to phenoxyethanol, it makes sense to avoid it. Most other people tolerate it.
Does it get absorbed, and what about cancer or hormones?
Some of it does pass through skin. In lab tests on human skin samples, about 36% was absorbed from a rinse-off formula and about 80% from a leave-on formula. The SCCS used these figures to estimate whole-body exposure when it calculated its safety margins.2 In two-year studies where rats and mice were given phenoxyethanol in drinking water, the committee reported no evidence of cancer-causing activity.2 The 2016 opinion did not include studies designed specifically to look at hormone (endocrine) activity, so it doesn't settle that question either way. A 2019 review reported that harmful effects in animal studies appeared only at exposures roughly 200 times higher than consumer use.3
Where does it sit on a label?
Look for "Phenoxyethanol" in the ingredient list. Under EU rules, ingredients are listed in descending order of weight, but those present at under 1% may appear in any order after the ones above 1%.1 Because phenoxyethanol is capped at 1%, it usually sits in the last part of the list. Its exact position among those low-level ingredients doesn't tell you how much is in the product, and "near the end" isn't a measure of its concentration. If you're avoiding it because of a diagnosed allergy, check the full list each time you buy a product, since formulas can change.
- Regulation (EC) No 1223/2009 on cosmetic products, Article 19(1)(g) and Annex V entry 29 (consolidated text of 18 May 2026). European Union, EUR-Lex, 2009 (consolidated 2026). https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02009R1223-20260518
- Opinion on Phenoxyethanol, SCCS/1575/16 (final version of 6 October 2016). Scientific Committee on Consumer Safety, European Commission, 2016. https://health.ec.europa.eu/system/files/2021-08/sccs_o_195_0.pdf
- Dréno B, et al. Safety review of phenoxyethanol when used as a preservative in cosmetics. Journal of the European Academy of Dermatology and Venereology, 2019. https://doi.org/10.1111/jdv.15944
Celeiq explains ingredients; it isn't medical advice. If you have a skin condition or reaction, talk to a dermatologist or doctor.