ANSES recommends restricting persulphates in hair products

ANSES is publishing its expert appraisal work on ammonium persulphate, potassium persulphate and sodium persulphate substances used mainly in hair bleaching products. The Agency has concluded that the use of persulphates poses health risks to hairdressing professionals and consumers, as these sensitising substances cause allergic respiratory and skin reactions. In view of the reported effects and disorders, ANSES recommends that exposure of professionals and the general public to products containing persulphates be reduced to a minimum. 

Ammonium, potassium and sodium persulphates are substances used for their oxidising properties, particularly in hair bleaching products. They have been classified as respiratory and skin sensitisers in the European CLP Regulation, and are the second leading cause of occupational asthma related to chemical exposure, after quaternary ammonium.  

The Agency's expert appraisal work, carried out as part of its mandate to implement the REACh Regulation, determined the risks for professionals and consumers associated with these sensitising substances, and identified the management measures to be implemented.

Health risks for hairdressing professionals and consumers

The work carried out by ANSES has demonstrated health risks for hairdressing professionals and consumers when these substances are used as ingredients in hair products.

Persulphate substances are used in different forms in hair bleaching products: powders to be mixed in a liquid, granules, creams, and ready-to-use liquids. Occupational exposure occurs by the respiratory and dermal routes, mainly during the preparation, application and rinsing of these products. Consumers can also be exposed, either when using bleaching products designed for home use or as hair salon customers.

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