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The ingredient, explained

Phosphatidylcholine

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

EmulsifyingSkin conditioning
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Ingredient guide

What it is and what it does

Lecithins, egg yolk

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

Emulsifying
Helps liquids that do not normally mix form a mixture.
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

Human research on a combination

Nicotinamide/phosphatidylcholine emulsion showed clinical acne improvement and good compliance compared with clindamycin.

What this does not tell us

Combination emulsion; lipid acyl composition specified. No isolated phosphatidylcholine effect. Participant count not in abstract.

Sources for this summary. PubMed 21668835 ↗

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 11 products ↗

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

Names and identifiers

Registry identity

Lecithins, egg yolk

INCI name on ingredient lists
PHOSPHATIDYLCHOLINE
CAS registry number
8002-43-5
EC number
232-307-2

Sources for this ingredient record