Methylisothiazolinone

  • May Cause Irritation
  • May Worsen Eczema
  • Preservative

Not rated A basic ingredient widely used in most products, such as purified water, or one that is not suitable for star-rating-based preference analysis.

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About Methylisothiazolinone

Methylisothiazolinone is a heterocyclic organic compound.[1] In cosmetics, it is used to inhibit the growth of microorganisms in products and delay spoilage during storage.[3] In Europe, when used as a preservative, it may be used at up to 0.0015% in rinse-off products.[2]

Methylisothiazolinone Details

Ingredient function
Preservative
Main product categories
Moisturizing/Nourishing Shampoo, Moisturizing/Nourishing Conditioner, Cleansing Foam
INCI name
METHYLISOTHIAZOLINONE
CosIng ID
35341

Methylisothiazolinone References

Last updated

This ingredient information is based on publicly available scientific literature, cosmetic ingredient databases, and regulatory sources from various countries. Usage restrictions, permitted concentrations, and labeling requirements may vary by country, region, and product type.

Ingredient preference is a reference metric based on user review data. It does not indicate the efficacy or safety of the ingredient itself.