Cosmetic ingredient dictionary
Magnesium Sulfate in cosmetics: what it is and what it does
Magnesium Sulfate is a cosmetic ingredient that makes the product thicker or thinner. Open Beauty Facts finds it in 362 products, most often face makeup.
By Bravoora teamUpdated Sources checked 2 sourcesHow we check
What does Magnesium Sulfate do in a product?
In a cosmetic product, Magnesium Sulfate makes the product thicker or thinner and adds volume to a powder. The EU’s CosIng database lists these jobs for it: viscosity controlling and bulking.
What other names and numbers does Magnesium Sulfate have?
- CAS number
- 7487-88-9, 10034-99-8 (heptahydrate), 18939-43-0
- EC number
- 231-298-2
- CosIng reference
- 35121
Which products contain Magnesium Sulfate?
Open Beauty Facts finds Magnesium Sulfate in the ingredient lists of 362 of the 22,021 products it has a list for, most often face makeup, foundations and concealers.
Products with it, by country of sale: France 80 · United States 72 · Germany 44 · Norway 26.
Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Magnesium Sulfate 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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