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

NOSTOC FLAGELLIFORME EXTRACT

Safety grade: A

This is an extract from a type of blue-green algae (cyanobacteria) that grows in colonies. It's used in skincare products to help the skin retain moisture and stay hydrated.

This ingredient acts as a humectant, drawing water into the skin and helping to maintain hydration and softness.

Graded using: COSING.

Last verified: May 26, 2026