Database/Emollient/Aluminum Hydroxide
100% natural origin · ISO 16128

Is Aluminum Hydroxide natural?

Yes. Aluminium and hydroxide are mineral fragments regardless of mined or precipitated origin.

INCI nameAluminum Hydroxide
CAS21645-51-2
FormulaAlH3O3 · 78.004 Da
FunctionEmollient · Humectant
FeedstockProduced from bauxite-derived aluminium via the Bayer process…

How we scored it

Inorganic mineral salt; Al and hydroxide both natural-origin. 1.0.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Produced from bauxite-derived aluminium via the Bayer process or precipitated from aluminium salts. No organic-carbon alternative route.

In plain English

A mineral compound of aluminium and hydroxide. Used in skincare as a texture-improving and opacifying agent.

Structure

2D structure of Aluminum Hydroxide

aluminum trihydroxide

PubChem CID 10176082 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2Aluminum Hydroxide. PubChem CID 10176082. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ALUMINUM HYDROXIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ALUMINUM HYDROXIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ALUMINUM%20HYDROXIDE