Bangladesh researchers tested 34 toothpastes for microplastics. Most contained detectable particles.

A study has detected microplastics in 26 of 34 toothpaste samples sold in Bangladesh, prompting researchers to call for stronger testing requirements and regulations.

The Environment and Social Development Organization said the products contained between 20 and 320 microplastic particles per 100 grams. Four of six toothpastes marketed for children also contained detectable particles.

Researchers collected products from 19 brands made in Bangladesh, India, Thailand and Vietnam between July 2025 and June 2026. The samples were tested at Jahangirnagar University.

Bangladesh Standards and Testing Institution deputy director Manjurul Karim said microplastics are not included on the country’s list of permitted toothpaste ingredients.

Unilever Bangladesh said its products comply with global and local standards and are safe. Square Toiletries said it was conducting its own tests and would take action if microplastics were found.

Researchers recommended standardized testing, mandatory compliance rules and an eventual ban on intentionally added microplastics.