The ingredient, explained
Oleic Acid
Oleic Acid has published research relevant to the stated experimental context.
Ingredient guide
What it is and what it does
9-Octadecenoic acid -9Z--
About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗
- Emollient
- Helps soften and smooth the skin surface.
- Emulsifying
- Helps liquids that do not normally mix form a mixture.
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 treatment study
In 56 adults with diabetes and lower-limb wounds, the combination shortened healing time compared with hyaluronic acid treatment.
What this does not tell us
Pilot combination formulation study cannot isolate oleic acid effects or justify general cosmetic benefit claims.
Sources for this summary. PubMed 31876118 ↗
Research review checked Oct 1, 2026
Selective exact-identity review of 7 supplied local candidates and the targeted primary-source search recorded below. Bounded review, not a systematic search.
Ingredient research is not proof that a product containing this ingredient works.
Read the 1 selected study
Human topical treatment study · n=56
Nano-hydrogel embedded with quercetin and oleic acid as a new formulation in the treatment of diabetic foot ulcer: A pilot study. ↗
International wound journal · 2020
Follow the formula
Products containing this ingredient
From the wider catalogue. Linked by the ingredient list, without an efficacy ranking.
Names and identifiers
Registry identity
9-Octadecenoic acid -9Z--
- INCI name on ingredient lists
- OLEIC ACID
- CAS registry number
- 112-80-1
- EC number
- 204-007-1
Sources for this ingredient record
- EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗ · ODbL 1.0 (Open Beauty Facts database) · Recorded Aug 8, 2026