Benzisothiazolinone (and) Methylisothiazolinone (and) Water

Geogard ECT is a broad-spectrum preservative blend combining benzisothiazolinone (BIT) and methylisothiazolinone (MIT) in an aqueous solution, offering synergistic antimicrobial efficacy against bacteria, yeast, and mold. It is particularly valued for its effectiveness across a wide pH range and in challenging formulations such as rinse-off products, industrial cosmetics, and wipes. Formulators choose it for its low use concentration (typically 0.05–0.15%), cost-effectiveness, and compatibility with a broad range of cosmetic matrices, though its use has come under increased regulatory scrutiny in leave-on products due to sensitization concerns associated with MIT.