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

LEUCONOSTOC

Safety grade: A

A natural fermentation ingredient derived from a type of beneficial bacteria, this substance works as a gentle preservative and skin conditioner in cosmetics. It helps keep products fresh while maintaining skin hydration and supporting a healthy complexion.

Graded using: COSING.

Last verified: June 9, 2026