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The ingredient, explained

Isostearyl Isostearate

A primary study examines this ingredient in the specified preparation and setting.

EmollientBindingSkin conditioning
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Ingredient guide

What it is and what it does

Isooctadecyl isooctadecanoate

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

Emollient
Helps soften and smooth the skin surface.
Binding
Helps the components of a product hold together.
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

Laboratory and human research

Blend improved clinical dry-skin signs versus mineral-oil vehicle and reduced water-vapour transmission in laboratory testing.

What this does not tell us

Combination result cannot be assigned to this ester alone. Abstract does not state participant count or treatment duration.

Sources for this summary. PubMed 22882126 ↗

Research review checked Oct 1, 2026

Bounded review of local candidates, exact-name indexed primary journal/PubMed safety and topical searches; not a systematic review.

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

Read the 1 selected study

Follow the formula

Products containing this ingredient

All 12 products ↗

From the wider catalogue. Linked by the ingredient list, without an efficacy ranking.

Names and identifiers

Registry identity

Isooctadecyl isooctadecanoate

INCI name on ingredient lists
ISOSTEARYL ISOSTEARATE
CAS registry number
41669-30-1
EC number
255-485-3

Sources for this ingredient record