Oleuropein
Oleuropein: A Natural Shield for Skin and Health—and a Versatile Active Ingredient in Modern Cosmetics
Introduction: What Is Oleuropein?
Oleuropein is a phytochemical, more specifically a polyphenol, found primarily in the leaves and fruits of the olive tree (Olea europaea). The olive tree, often referred to as the “tree of life,” is an ancient cultivated plant that has been used in the Mediterranean region for thousands of years. In addition to its importance for nutrition and health, oleuropein is now also coming into focus in cosmetic research—with promising results.
Occurrence in Nature
Oleuropein is found primarily in the leaves of the olive tree, but also in the skin and flesh of olives. The evergreen olive tree thrives in warm, sunny climates such as Southern Europe, North Africa, the Middle East, as well as parts of South America and Australia. It can grow up to 10 meters tall and reach a remarkable age of several hundred years. The flowering season begins in spring, and the olive harvest traditionally takes place in autumn.
Extraction and Production
Oleuropein is obtained through extraction from dried olive leaves. Modern extraction methods such as ultrasonic extraction or CO₂ extraction enable the gentle isolation of active ingredients with high purity. Standardized oleuropein powder typically contains at least 80% oleuropein and is available as a hygroscopic, pale yellow crystalline powder.
Physicochemical Properties of Oleuropein
INCI Name: Olea Europaea (Olive) Leaf Extract
CAS Number: 8001-25-0
Molecular Formula: C25H32O13
Appearance: Pale yellow crystalline powder
Physical State: Solid
Melting point: approx. 165–170 °C
Solubility: Moderately soluble in water, more soluble in ethanol
Active ingredient content: ≥ 80% oleuropein
Recommended usage concentration: 0.5–1% in cosmetic formulations
Efficacy and recommended usage concentration
Studies demonstrate that oleuropein exhibits antioxidant, antimicrobial, and anti-inflammatory properties at concentrations of 0.5% to 1% in cosmetic formulations. In vitro studies show that oleuropein is even more effective than vitamin E at scavenging free radicals and reducing oxidative stress. The EC₅₀ values are below 10 µM—an indication of its high efficacy at low doses.
Study results on efficacy
- Antioxidant performance: In a direct comparison with Trolox and vitamin C, oleuropein performed excellently in neutralizing free radicals (e.g., superoxide anions, DPPH radicals).
- Anti-inflammatory effect: In preclinical efficacy models, a 0.5 mg application per skin area reduced inflammation by over 30%—comparable to dexamethasone.
- Antimicrobial effect: As little as 0.1% oleuropein slowed the growth of Staphylococcus aureus; at 0.4% and above, growth was completely inhibited.
Benefits of Oleuropein in Cosmetics
- Antioxidant: Protects the skin from free radicals, prevents premature skin aging.
- Anti-inflammatory: Helps with irritated or inflamed skin, including acne and eczema.
- Antimicrobial: Inhibits the growth of bacteria and fungi—ideal for products targeting skin imperfections.
- Anti-aging: Supports cell renewal and improves skin texture.
Disadvantages and Challenges
- Taste/Odor: In food, oleuropein has a bitter taste, which can be a disadvantage for oral products.
- Stability: In cosmetic formulations, stability must be ensured when exposed to light and heat. Suitable packaging (e.g., airless dispensers) is necessary.
- Price: High-purity oleuropein extracts are more expensive than simple plant extracts.
Application ideas for cosmetic products with oleuropein
Thanks to its versatility, oleuropein is an ideal active ingredient for various cosmetic applications:
- Anti-aging cream: In combination with hyaluronic acid, oleuropein has antioxidant and cell-protective effects.
- Serum for sensitive skin: Ideal for redness, rosacea, or post-inflammatory hyperpigmentation.
- Face mask for blemishes: When combined with clay and zinc, it regulates sebum production.
- After-sun lotion: Protects the skin from oxidative stress caused by UV radiation.
- Deodorant spray: Antibacterial action reduces odor formation.
- Lip care: As a protective, regenerating active ingredient for chapped lips.
Summary
Oleuropein is a highly effective, plant-based bioactive ingredient with great potential for modern skincare. Its antioxidant, antimicrobial, and anti-inflammatory properties make it a versatile active ingredient that is ideal for sensitive, blemish-prone, or mature skin. Particularly noteworthy is its high efficacy even at low dosages, as well as its good skin tolerance.
Cosmacon GmbH – Your Partner for Innovative Active Ingredient Cosmetics
Cosmacon GmbH supports you in developing customized cosmetic products with oleuropein. Whether it’s an anti-aging serum, detox cream, or skin-soothing facial care—we work with you to design modern, effective, and brand-strengthening formulations. Benefit from our experience in active ingredient cosmetics and take your brand to the next level. Let yourself be inspired by the power of the “Tree of Life”!
Would you like to develop innovative products with oleuropein? Contact Cosmacon – we’d be happy to advise you.
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✨ Our partner Tojo Cosmetics offers innovative, active-ingredient-rich private label products—quickly available, high-quality, and perfect for brands that want to impress with passion and quality.
References:
Li H, Deng N, Yang J, Zhao Y, Jin X, Cai A, Seeram NP, Ma H, Li D, Yang H, Liu C. Front Pharmacol. 2025 Jan 8;15:1496078.
Sklenarova R, Allaw M, Perra M, Castangia I, Frankova J, Luis Pedraz J, Letizia Manca M, Manconi M. Eur J Pharm Biopharm. Apr 2023;185:126-136.
Oleuropein-Rich Gellan Gum/Alginate Films as Innovative Treatments against Photo-Induced Skin Aging.
Busto F, Licini C, Luccarini A, Damiani E, Mattioli-Belmonte M, Cometa S, De Giglio E. Molecules. 2023 May 25;28(11):4352.