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Silkworm Frass

INCI: SILKWORM FRASS

Reviewed by Rosie · Last updated 18 Aug 2026

What Is Silkworm Frass?

Silkworm Frass is the frass obtained from the silkworm, Bombyx mori.

Its declared cosmetic function is abrasive.

Source: European Commission CosIng inventory.

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