Allergen of the Day – Methylisothiazolinone
Allergen of the Day
Methylisothiazolinone (MI or MIT) and methylchloroisothiazolinone (MCI or CMIT)
The molecule methylchloroisothiazolinone (CAS 26172-55-4) causes contact dermatitis and was seen in many products world wide in preparations like cosmetics, lotions, moisturizers, sanitary wipes, shampoos, dish washing detergents, body and hand products, baby wipes, shampoos and even mouth washes. Methylchloroisothiazolinone Methylisothiazolinone is often pared with Methylisothiazolinone, is a clear liquid with no fragrance tones. It functions as a preservative and cytotoxin. The allergies are being documented in journal articles and in the EU Scientific Committee on Consumer Safety (SCCS) in the document “THE SCIENTIFIC COMMITTEE ON COSMETIC PRODUCTS AND NON-FOOD PRODUCTS INTENDED FOR CONSUMERS”.
Methylchloroisothiazolinone often causes contact dermatitis and persistent eczema and causes out breaks of with those who suffer psoriasis on the skin exposed to methylchloroisothiazolinone. This is listed as a known human immune system toxicant or allergen in EU Banned and Restricted Fragrances and Canada. However, we still see it in products in the United States, South American, Africa and Asia. This is found as a food additive. Clinical we see are seeing and increase with contact dermatitis from this allergen. It is active at 15 parts per million.
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