No known benefits

Triisostearin at a glance

  • A blend of glycerine and fatty acid stearic acid
  • Is a triester, meaning it has three ester groups, such as triglyceride
  • Adds spreadability and enhances texture by adding a cushiony feel
  • Also known as glyceryl triisostearate

Triisostearin description

Triisostearin is a versatile ingredient made by combining skin-replenishing glycerine with moisturising fatty acid isostearic acid. The blend is known as triester since it contains three distinct ester groups. A triglyceride, such as caprylic/capric triglyceride, is another example of a triester ingredient. Its use in skin care and makeup is primarily to create a cushiony, smooth texture in formulas that are oil-, emollient-, or silicone-based. The typical usage level is between 2-10%, although greater or lesser amounts may be used depending on desired characteristics. When combined with ingredients such as dimer dilinoleyl dimer dilinoleate and hydroxystearic acid, triisostearin can be thought of as a synthetic alternative to petrolatum, since such a blend shares this moisturising ingredient’s occlusive properties on skin, making it an interesting choice for lip care products. Triisostearin is considered safe as used in cosmetics.

Triisostearin references

  •, Accessed November 2021, ePublication
  • International Journal of Toxicology, Volume 20, Supplement 4, 2001, pages 61-94

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

We have not yet rated this ingredient because we have not had a chance to review the research on it.