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Mixture/ Blend of Methylisothiazolinone (MI) and Methylchloroisothiazolinone (CMI), sometimes referred as Kathon CG, is a widely used preservative in personal care products with long history. It might be used in different varieties of cosmetics products including shaving and after-shave products, lotions, shampoo and shower gel, nail product, suntan preparations, make-up cosmetics etc

Following an observation of increasing skin sensitivities after the use of personal care products containing CMI/MI preservatives, in recent years, cosmetics associations, scientific groups/ committees, and authorities work and investigate the safe use level of CMI/MI preservative in cosmetics products.

Authorities responsible for regulating cosmetic products from different countries have already amended the restriction and requirement towards the use of MCI/MI preservatives. The table provides you a quick summary and comparison of restriction on the concerned preservatives over the leading countries.

Please click here for the summary table of requirements for various countries. 


INCI NAME: Methylchloroisothiazolinone
CAS NO.: 26172-55-4
TECHNICAL NAME: 5-Chloro-2-Methyl-4-Isothiazolin-3-one

INCI NAME: Methylisothiazolinone
CAS NO.: 2682-20-4
TECHNICAL NAME: 2-Methyl-3(2H)-Isothiazolone

Our technical experts in SGS group provide extensive testing and compliance service, helping and supporting our valuable customers to have their products comply with regulatory requirement. Please do not hesitate to contact us for further information.

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