Cosmetic ingredient dictionary
Aluminum Hydroxide in cosmetics: what it is and what it does
Aluminum Hydroxide is a cosmetic ingredient that holds water in the skin or the product. Open Beauty Facts finds it in 317 products, most often face makeup.
By Bravoora teamUpdated Sources checked 2 sourcesHow we check
What does Aluminum Hydroxide do in a product?
In a cosmetic product, Aluminum Hydroxide holds water in the skin or the product, softens and smooths the skin, and makes the product thicker or thinner. The EU’s CosIng database lists these jobs for it: humectant, emollient, viscosity controlling, opacifying and skin protecting.
What other names and numbers does Aluminum Hydroxide have?
- CAS number
- 21645-51-2
- EC number
- 244-492-7
- CosIng reference
- 74215
Which products contain Aluminum Hydroxide?
Open Beauty Facts finds Aluminum Hydroxide in the ingredient lists of 317 of the 22,021 products it has a list for, most often face makeup, foundations and concealers.
Products with it, by country of sale: Norway 66 · United States 61 · Netherlands 40 · France 34.
Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Aluminum Hydroxide turns up, not how much of the market it is.
Bravoora reads this ingredient for everyone you shop for: an allergy or intolerance, a vegan or vegetarian diet, a calorie or protein goal, and the labels on supplements and skincare too. Build a profile · For dermatologists, dietitians and doctors
Sources
The job, the description and the EU annex entry are CosIng’s; the fragrance allergens are the EU Annex III names Bravoora’s label checker reads; the product counts are Open Beauty Facts’.
- European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
- Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL
Contains information from Open Beauty Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check
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