Patch Testing

Methylisothiazolinone and Methylchloroisothiazolinone

If you’ve arrived at this now old post because you’re looking for products free from the preservatives methylisothiazolinone (MI) and methylchloroisothiazolinone (MCI), please see the dedicated website Methylisothiazolinone Free, which has extensive lists of safe cosmetics, make-up, household detergents, paints, pet…
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