Magnesium Aluminum Silicate


Texture enhancer

Magnesium Aluminum Silicate at a glance

  • Derived from naturally occurring clay minerals
  • Often used as a thickening agent and texture enhancer in cosmetics
  • May also be included to impart opacity to a formula
  • Can function as an emulsion stabilizer helping unlike ingredients stay together
  • Can deliver mattifying absorbent properties when properly formulated to do so

Magnesium Aluminum Silicate description

Magnesium aluminum silicate is derived from naturally occurring clay minerals. It has absorbent properties and is often used as a thickening agent and texture enhancer in cosmetics. One of its other unique properties is that it improves the spreadability of a formula. Magnesium aluminum silicate may also be included to impart opacity to a formula thanks to its powdery off-white to creamy-white colour. It is particularly helpful in makeup products, where it aides in suspending pigments and delivering them evenly to the surface of skin. Magnesium aluminum silicate may also be added to a formula as an emulsion stabilizer where it helps unlike ingredients (like oil and water) blend and stay together. You can find this ingredient in deodorant products, body creams, facial lotions and many other kinds of personal care products. In March 2021, the Cosmetic Ingredient Review Expert Panel reaffirmed this ingredient is safe to use in skin care formulations. Their report looked at concentrations up to 11%.

Magnesium Aluminum Silicate references

  • The Cosmetic Ingredient Review, March 2021, pages 1-27
  • International Journal of Toxicology, January 2003, pages 37-102
  • International Federation Societies of Cosmetic Chemists, 1997, pages 1-43

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not Rated