Cosmetic ingredient

TRIHYDROXYSTEARIN

Trihydroxystearin is an ester made by linking glycerol to three 12-hydroxystearic acid chains. It is a lipid substance with a defined structure, rather than a simple oil: the three fatty chains are joined within one glycerol molecule.

Molecular structure of TRIHYDROXYSTEARIN
2D molecular structure
CAS number
139-44-6
EC number
205-364-6
Molecular formula
C57H110O9
Molecular weight
939.5
Chemical name
1,2,3-Propanetriyl tris(12-hydroxyoctadecanoate)
InChIKey
WCOXQTXVACYMLM-UHFFFAOYSA-N

TRIHYDROXYSTEARIN: what it is

Trihydroxystearin is an ester made by linking glycerol to three 12-hydroxystearic acid chains. It is a lipid substance with a defined structure, rather than a simple oil: the three fatty chains are joined within one glycerol molecule.

The name on an ingredient list describes that structure; it does not, by itself, identify a particular plant or raw material used in a product. Seeing Trihydroxystearin on a label therefore does not reveal the commercial origin of the materials used to make it.

TRIHYDROXYSTEARIN: what it does in cosmetics

In cosmetics, Trihydroxystearin helps adjust viscosity, meaning how thick or fluid a product is. In everyday use, that can support a preparation with a less runny consistency and a more controlled texture during application.

It is also used for skin conditioning, a term for ingredients that contribute to a softer, more comfortable skin feel after application. Those roles concern the texture and sensory character of a formula; they do not show that the isolated ingredient treats dryness, wrinkles, dark spots, or skin disease.

Catalogue presence

Products containing this ingredient

See which products include it and the name used in each composition.