Cosmetic ingredient

TRIISOSTEARIN

Triisostearin is a triester made by joining glycerin and isostearic acid. It therefore belongs to the glyceryl triester group, a family of oily substances added to formulas to help shape their texture and the way the product feels on skin.

INCITR1 products
CAS number
26942-95-0
EC number
248-122-5
Chemical name
1,2,3-Propanetriyl triisooctadecanoate

TRIISOSTEARIN: what it is

Triisostearin is a triester made by joining glycerin and isostearic acid. It therefore belongs to the glyceryl triester group, a family of oily substances added to formulas to help shape their texture and the way the product feels on skin.

The name does not mean a whole vegetable oil or a plant extract. It identifies a substance made from those chemical components and may also be described as glycerol triisostearate. That distinction matters because similarly named ingredients can contain different fatty acids or a different arrangement of components.

TRIISOSTEARIN: what it does in cosmetics

In cosmetics, triisostearin can contribute to a softer, less rough feel during application through its skin-conditioning role. It also controls viscosity: in practical terms, it helps give body to the oily phase of a formula so the texture is not more runny than intended for that product.

A safety review of glyceryl triesters includes triisostearin among ingredients used in cosmetics and links this family with occlusive skin conditioning and viscosity increase in water-free media. This evidence describes the formulation role of the group; it does not show that isolated triisostearin treats acne, wrinkles, dark spots, or a skin disease.

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