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

CALOTHRIX CRUSTACEA

Safety grade: A

Calothrix crustacea is a type of blue-green algae (cyanobacteria) found in aquatic environments. It's harvested and used in skincare products for its beneficial compounds.

This ingredient helps skin retain moisture and improves overall skin texture and hydration by drawing water to the skin's surface and conditioning the skin barrier.

Graded using: COSING.

Last verified: May 26, 2026