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 here.

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. 

Affiliate 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 to other programs of which MI free is a member, including Awin, Google Adsense, Share A Sale and Viglink, each of which may use temporary cookies. 

This site uses cookies from Google to deliver some of its services, to personalise ads and to analyse traffic. Information about your use of this site is shared with Google. By using this site, you agree to its use of cookies.

The MI Free website may contain adverts, sponsored and affiliate links on some pages from the above and others. These are typically served through our advertising partners — as well as Amazon Affiliates, these may include Google Adsense, and others. We use trusted advertising partners who each have high standards of user privacy and security. However we do not control the actual adverts seen / displayed by our partners. Our partners may collect data and use cookies for personalisation and measurement. Where ad preferences are requested as ‘non-personalised’ cookies may still be used for frequency capping, aggregated ad reporting and to combat fraud and abuse.

Clicking on any adverts, sponsored or affiliate links may track your actions by using a cookie saved to your device. Your actions are usually recorded as a referral from our website by this cookie. In most cases we earn a small commission from the advertiser or advertising partner, at no cost to you, if you make a purchase on their website.

MI Free uses advertising partners in these ways to help generate an income from the website, which allows us to continue our work and provide you with the best overall experience and valued information.

If you have any concerns about this we suggest you do not click on any adverts or product links found throughout the website.


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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