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


CAS Number 7487-88-9
Chem/IUPAC Name: Magnesium sulphate
EINECS/ELINCS No: 231-298-2
COSING REF No: 35121
Magnesium Sulfate is a side ingredient that is often added to cosmetic and personal care products in order to control the viscosity and bulk up the product. This ingredient gets absorbed in the skin and is able to fight acne and conditions like skin inflammation. Magnesium Sulfate is also a temporary solution to skin wrinkling because of its high ionic strength. The chemical formula of Magnesium Sulfate is MgSO4.

What is MAGNESIUM SULFATE used for?

Magnesium Sulfate is a common ingredient in the beauty industry because it has many benefits for the skin and hair. It can be found in products like exfoliating masks, scrubs, creams and cleansers.
  • Skin care: It is a great oil absorber that leaves the skin clean and seeps into the skin to prevent conditions like blemishes, acne and inflammation. It is also high in ionic strength that relieves the skin of wrinkling
  • Hair care: It is added because it is an effective toxin and controls the production of excess oil on the scalp. This ingredient leaves the hair feeling cleaner, shinier and smoother
  • Cosmetic products: It is also a good texture enhancer that can bulk up the product and control its viscosity. Cosmetic products have better spreadability when enhanced with the addition of this ingredient. Moreover, these products do not make the skin oily


Magnesium Sulfate is an inorganic salt that is naturally derived from the mineral deposits present in sea water. It is also known as Epson salt.

What does MAGNESIUM SULFATE do in a formulation?

  • Bulking
  • Hair conditioning
  • Viscosity controlling

Safety profile

Magnesium Sulfate is a safe ingredient for cosmetics and personal care products. However, it can have some side effects if used in high concentrations. It is best to perform a patch test before full usage. Further, Magnesium Sulfate should be avoided during pregnancy and labor.

Technical profile

Property Values
Boiling Point 330°C
pH Neutral
Solubility Soluble in water

Commercial Selection : Grades containing solely MAGNESIUM SULFATE

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