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Cosmetic ingredient dictionary

Magnesium Carbonate in cosmetics: what it is and what it does

Magnesium Carbonate is a cosmetic ingredient that absorbs water or oil. The EU lists it as an allowed colorant. Open Beauty Facts finds it in 29 products, most often eye makeup.

By Bravoora teamUpdated Sources checked 3 sourcesHow we check

What does Magnesium Carbonate do in a product?

In a cosmetic product, Magnesium Carbonate absorbs water or oil, holds a powder or a pressed product together and adds volume to a powder. The EU’s CosIng database lists these jobs for it: absorbent, binding, bulking and opacifying.

absorbentbindingbulkingopacifying

What other names and numbers does Magnesium Carbonate have?

CAS number
546-93-0
EC number
208-915-9
CosIng reference
77618

Is Magnesium Carbonate restricted in the EU?

It is allowed, on a list with limits. The EU lists it as an allowed colorant, with its own conditions of use (Annex IV of Regulation 1223/2009, entry 139).

The annex entry sets the exact limits, the products it may be used in and any warning the label must carry.

Which products contain Magnesium Carbonate?

Open Beauty Facts finds Magnesium Carbonate in the ingredient lists of 29 of the 22,021 products it has a list for, most often eye makeup, makeup and face makeup.

  • Eye makeup4
  • Makeup4
  • Face makeup3
  • Eyeshadows2

Products with it, by country of sale: France 6 · United States 6 · Spain 3 · United Kingdom 3.

Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Magnesium Carbonate turns up, not how much of the market it is.

On these listsColorants

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’.

  1. European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
  2. Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL
  3. EU Regulation 1223/2009 on cosmetic products (the annexes)

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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