BIS-DIMONIUM METHOSULFATE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

BIS-DIMONIUM METHOSULFATE

Safety grade: A

This is a synthetic conditioning agent that helps hair feel soft and manageable. It works by coating the hair surface to reduce frizz and add shine while also helping keep cosmetic products stable and well-mixed.

This ingredient conditions hair by coating strands to improve softness and manageability, while simultaneously stabilizing emulsions to prevent separation of oil and water-based components in cosmetic formulations.

Graded using: COSING.

Last verified: May 26, 2026