RESMETHRIN is graded A** (Safe) by Expert·ING, based on COSING regulatory data.

RESMETHRIN

Safety grade: A**

Resmethrin is a synthetic insecticide and antimicrobial agent that kills bacteria and other microorganisms. It's a man-made chemical that helps prevent microbial growth in cosmetic products.

Resmethrin is used in cosmetics as an antimicrobial preservative to prevent the growth of bacteria, fungi, and other microorganisms that could spoil the product or cause skin irritation.

Graded using: COSING.

Last verified: May 26, 2026