Three kids' modeling clays found packed with excessive allergens

The Consumer Council has tested 15 modeling clay and playdough toys available on the market, revealing that three samples contained two types of allergenic preservatives at levels exceeding European Union safety limits.

According to the watchdog, the two allergenic preservatives, namely methylchloroisothiazolinone (CMIT) and methylisothiazolinone (MIT), were detected at levels higher than the European Union’s (EU) upper limit for aqueous toy materials intended for use by children under 36 months of age.

In one product, the detected CMIT level was more than 10 times higher than the permitted threshold. The findings have been referred to the Customs for further action.

Preservatives such as BIT, CMIT and MIT are commonly used in modelling dough and modelling clay to reduce risks of microbial contamination during production and use. 

However, all 3 types are known allergenic substances which may trigger allergic reactions with prolonged skin contact, with MIT named as “Allergen of the Year” in 2013 by the American Contact Dermatitis Society, said the Council.

Meanwhile, the watchdog’s test also showed that six samples were detected with migration of certain elements, while eight contained aerobic microorganisms, though none surpassed EU regulatory limits. Additionally, 11 products failed to include labels advising consumers to wash their hands after use.

The Consumer Council urged manufacturers to improve product formulations and enhance labeling transparency.

It recommended adding clear instructions such as "thoroughly clean hands before and after use," as well as prominently displaying production dates, expiration dates, and usage periods.

These measures aim to reduce health risks for children from expired or microbially contaminated products, it added.