Welcome to MI Free


MI Free is an online resource dedicated to information about allergy to the preservative methylisothiazolinone (MI) and its related preservatives, such as methylchloroisothiazolinone (MCI), which are found widely in cosmetics, toiletries, household cleaning products and other domestic products such as paints.

Increasing numbers of consumers worldwide are developing serious and debilitating allergies to these ‘isothiazolinone’ preservatives, and the epidemic shows little sign of slowing down.

Those with allergy to MI often struggle to find the news and information they need – for instance, on safe products, how to obtain a medical diagnosis or help with their problem, and information on the labelling of isothiazolinone preservatives on consumer products. This site will endeavour to help those readers and answer those question you might have. 

To navigate the site, use the drop-down menu at the top.