bananapeel

Methylisothiazolinone

METHYLISOTHIAZOLINONE

Data confidence:High

Function

Preservative, Antimicrobial

EWG Safety Score

7/10High concern

About this ingredient

Methylisothiazolinone is a synthetic antimicrobial and preservative agent used in cosmetics and personal care products to prevent microbial contamination and extend shelf life. It is effective against a broad spectrum of bacteria and fungi at low concentrations. It is commonly used in leave-on and rinse-off formulations to maintain product stability.

Found in 1+ sunscreens