Preservative
Methylchloroisothiazolinone
A preservative often paired with methylisothiazolinone, similarly flagged for allergic contact dermatitis potential in sensitive individuals.
preservativeantimicrobialallergen-flagged
✕ High Risk
Comedogenic Rating
0/5
Irritation Potential
3/5
What is it?
Methylchloroisothiazolinone (CMIT) is a preservative frequently used in combination with methylisothiazolinone, sharing a similar allergenic profile that has drawn regulatory and dermatological attention.
Used in rinse-off products as part of a preservation system, though increasingly less common due to allergy concerns.
Key Benefits
Antimicrobial protection
Helps prevent bacterial and fungal contamination.
Suitable for
Main Actions
When it may be insufficient
Like methylisothiazolinone, it carries a recognized risk of allergic contact dermatitis — many brands have phased it out of leave-on products.
CategoryPreservatives
Frequently Asked Questions
What does Methylchloroisothiazolinone do for skin?
Used in rinse-off products as part of a preservation system, though increasingly less common due to allergy concerns.
Who should use Methylchloroisothiazolinone?
Methylchloroisothiazolinone is suitable for: rinse-off products primarily; those with sensitive skin should check for it on labels.
Are there any warnings about Methylchloroisothiazolinone?
Like methylisothiazolinone, it carries a recognized risk of allergic contact dermatitis — many brands have phased it out of leave-on products.
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