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

CERIUM OXIDE

Safety grade: A**

Cerium oxide is a fine powder made from cerium, a naturally occurring rare earth element. It's used in cosmetics to create an opaque or matte appearance by blocking light from passing through the product.

This ingredient makes cosmetic products appear more opaque and less see-through, helping to create a smooth, even-looking finish and improve the product's aesthetic appeal.

Graded using: COSING, FDA.

Last verified: May 26, 2026