Methylchloroisothiazolinone (MCI) and Methylisothiazolinone (MI) are synthetic preservative actives. They work by disrupting microbial enzyme systems and cell membranes, effectively inhibiting the growth of bacteria, yeast, and fungi to protect formulations from microbial contamination.

Potent Microbial Protection at Low Dosage.
Extends Shelf Life and Safety of Products.