The material selection platform
Cosmetics Ingredients
The material selection platform
Cosmetics Ingredients


CAS Number 61790-53-2 / -
Chem/IUPAC Name: Diatomaceous Earth is a mineral material consisting chiefly of the siliceous frustules and fragments of various species of diatoms
EINECS/ELINCS No: - / 231-545-4
COSING REF No: 84553
Diatomaceous Earth, often referred to as DE, is a naturally occurring, porous sedimentary rock composed of the fossilized remains of diatoms, a type of microscopic algae. Its chemical formula is primarily SiO2 (silicon dioxide), with traces of other minerals. In cosmetics, Diatomaceous Earth is used for its gentle exfoliating properties and absorbent qualities. It appears as a fine, soft, chalky powder and serves as an effective yet non-abrasive exfoliant, aiding in the removal of dead skin cells, impurities, and excess oil. Additionally, Diatomaceous Earth can be found in products like facial masks and scrubs, contributing to smoother and revitalized skin.

What is DIATOMACEOUS EARTH used for?

The cosmetic and personal care industry benefit greatly due to Diatomaceous Earth’s many versatile properties.
  • Skin care: It gently sloughs away dead skin cells, unclogs pores, and assists in the removal of impurities and excess oil. This non-abrasive exfoliation process leaves the skin feeling smoother and looking rejuvenated. Moreover, its absorbent qualities make it valuable for addressing concerns like excess sebum, making it a popular ingredient in masks and cleansers designed to combat oily skin and minimize the appearance of pores
  • Cosmetic products: It serves as a texturizing and thickening agent in cosmetic products, enhancing the consistency of various products like foundations, creams, and powders. Its absorbent nature helps control shine in makeup products, ensuring a matte finish that lasts


Diatomaceous Earth is formed over millions of years from the accumulation of the silica-rich cell walls of diatoms, tiny aquatic algae. These diatoms die, sink to the ocean or lake floor, and their remains fossilize. The deposits are then mined, crushed, and milled to produce the fine, powdery substance used in cosmetics.

What does DIATOMACEOUS EARTH do in a formulation?

  • Absorbent
  • Anticaking
  • Bulking
  • Opacifying

Safety profile

Diatomaceous Earth has a favorable safety profile when used in personal care and cosmetic products. It is non-toxic when applied topically and generally well-tolerated by most skin types. However, as with any cosmetic ingredient, individuals with specific sensitivities or allergies should exercise caution and conduct a patch test.

Technical profile

Property Values
Boiling Point 2230°C
Melting Point 1710°C
pH Neutral
Solubility Insoluble in water
Back to Top