Illite description

Illite is a mineral-sourced natural thickener that also has good absorbent properties and is sometimes referred to as French green clay. Illite has a stronger ability to calm skin irritated by influencing factors in skin that can lead to health issues. Interestingly, it's not as absorbent as many other clays (kaolin being one) which is why it's rarely used as the sole absorbent ingredient in products for oily or blemish-prone skin.

Illite references

  • Journal of Medical Microbiology, January 2016, pages 19-27
  • Future Medicinal Chemistry, April 2014, pages 641-655
  • International Geology Review, July 2010, pages 745-770

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