A European Union (EU) ban on several hazardous chemicals in cosmetics and personal care products (such as shampoo and deodorants) entered into force on 1^st September 2025. This is an important example of how EU regulation protects people’s health from harmful chemicals.

Under the EU’s Cosmetics Regulation, if a chemical is classified as carcinogenic, DNA-damaging or toxic for reproduction – often called a CMR – then it will trigger a ban on its use in cosmetic products. A number of hazardous chemicals (including bisphenol AF, tetrabromobisphenol-A, dibutyltin oxide and 4-methylimidazole) were classified as CMRs in 2023. They were then added to the list of chemicals that are restricted in cosmetics and personal care products under the EU law in May 2025, with entry into force (the date the ban applies from) set for 1^st September.

So from 1^st  September 2025, the use of these chemicals in these products is banned in the EU, which is a great win for consumers.

A chemical called TPO (trimethylbenzoyl diphenylphosphine oxide) is another chemical included in the ban. TPO was widely used in gel nail polishes to help them dry faster and last longer. The chemical was classified in the EU as toxic to reproduction after studies linked exposure to TPO to long-term fertility issues in animals. It was also classified as a skin sensitiser, meaning it can cause skin allergies.

So from now on, cosmetic products containing TPO also cannot be sold or used, such as by nail technicians. This was clarified by the EU Commission in an FAQ.

This process is the standard procedure under the EU’s Cosmetics Regulation after a substance is classified as a CMR, so this ban is a great example of a protective regulation in action. Such a ban also triggers innovation towards safer products for consumers.

Alongside other civil society organisations, such as the EDC-Free Europe coalition, CHEM Trust has long advocated for safer cosmetics and personal care products, so we’re pleased to see that these hazardous substances will no longer be allowed for use in these products in the EU. We support ongoing efforts to ensure the most hazardous chemicals are not used in consumer products.

The UK does not yet have such a ban, but to avoid TPO and other hazardous chemicals, consumers can speak to their nail technicians and ask about the ingredients of products or read the ingredient lists to check.

Read more about reducing your risk of exposure to harmful chemicals in cosmetics and toiletries here.

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