The ingredient, explained

Polyglyceryl-2 Dipolyhydroxystearate

A formulation experiment tests this emulsifier directly.

Skin conditioning

Explore connections

Ingredient guide

What it is and what it does

Octadecanoic acid, 12-hydroxy-, homopolymer, ester with oxybis-propanediol-

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Skin conditioning: A broad cosmetic role for maintaining skin condition. It does not identify a particular clinical benefit.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Formulation research

A laboratory comparison found that foundations made with different emulsifiers had different stability; the polyglyceryl-2 dipolyhydroxystearate formulation showed some separation during extended storage.

What this does not tell us

This finding depends on the complete formula and storage conditions. It measures product stability, not skin hydration or clinical efficacy.

Sources for this summary. DOI 10.1021/acsomega.5c12204 ↗

Research review checked Oct 1, 2026

Bounded targeted searches for the exact ingredient identity in primary research or final expert assessments, with selected-source verification. Not a systematic review.

Ingredient research is not proof that a product containing this ingredient works.