The ingredient, explained

Stearic Acid

A human skin experiment included this emulsifier.

CleansingEmulsifyingEmulsion stabilisingMaskingRefattingSurfactant

Explore connections

Ingredient guide

What it is and what it does

Stearic acid

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

Cleansing: Helps remove material from the body surface.
Emulsifying: Helps liquids that do not normally mix form a mixture.
Emulsion stabilising: Helps keep an emulsion from separating.
Masking: Reduces or conceals the formula's underlying odour or taste.
Refatting: Replenishes lipids on hair or the outer skin layers.
Surfactant: Changes surface tension to help a product distribute or interact with other materials.

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

Human topical research

The experiment found that emulsifiers could affect water loss differently in intact and detergent-damaged skin.

What this does not tell us

The abstract lists this ingredient among those tested but does not assign the aggregate results to each emulsifier. It cannot support a specific benefit or harm claim for this ingredient.

Sources for this summary. PubMed 10675696 ↗

Research review checked Oct 1, 2026

Bounded review of 1 local candidate records, selected relevant abstracts, and targeted exact-name primary-source searches. Not a systematic review.