Methylisothiazolinone Free is an online resource for those with allergy to the preservative methylisothiazolinone (MI) and related preservatives such as methychloroisothiazolinone (MCI), benzisothiazolinone and octylisothiazolinone.

It features listings of products free from all the isothiazolinone preservatives — including cosmetics, toiletries, household detergents and paints — plus articles, news, blogs and useful links, primarily aimed at UK, EU, Australian and North American readers. 

It is edited by Alex Gazzola, a writer and author specialising in allergies, food intolerances and other sensitivities. You can contact him on info@mi-free.com.

MI Free launched in early 2016. 


The information provided on this site is given in good faith, and while every effort is made to ensure it is correct at the time of publishing, some occasional errors may slip through.

Bear in mind that ingredients and formulations in all products can be subject to change at short notice, and that a previously safe product may in the future be reformulated to contain the ingredient you are trying to avoid.

Similarly, a safe product manufactured in one country may not necessarily be safe in another country.

Always double check ingredients before purchasing or using products linked to or recommended on this site. No responsibility can be accepted for action taken after consulting this website. If you believe you have a problem with MI or an other ingredient, always see a doctor in the first instance. 

Disclosure Notice

This site is a member of the Amazon affiliate scheme. A small fee is generate towards the running costs of the site when visitors purchase a product through an affiliate link, with no additional costs to them. A few other links on this site are affiliated. 


Some Google ads appear on the site. These are mostly responsive, and tailored to individual users’ browsing history and apparent interests. There is no guarantee products advertised through a responsive Google ad are necessarily isothiazolinone-free.

Any other bespoke adverts appearing on the site are for brands / products which are isothiazolinone-free.

For advertising information and rates, contact Alex on info@mi-free.com.


Methylisothiazolinone Free is not responsible for the content of sites to which hyperlinks are provided, and such links are often only provided for information and reference. Link to external material through this site does not necessarily imply endorsement or agreement. 

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