Science
Mechanism of Action
Oleanolic acid exerts its effects through several key pathways. It significantly reduces hyperseborrhea, or excess oil production, by inhibiting the enzyme 5α-reductase, which is crucial for sebum synthesis. Its anti-inflammatory properties stem from its ability to inhibit nuclear factor-kappa B (NF-κB) activation, a primary regulator of inflammatory responses, thereby reducing redness and swelling. As an antioxidant, it combats oxidative stress. The ingredient also demonstrates antimicrobial, antibacterial, and antifungal actions, helping to control problematic skin microorganisms. Furthermore, oleanolic acid supports anti-aging by inhibiting elastase, which preserves skin elasticity, reinforces the skin barrier, promotes regeneration, and offers protection against particulate matter-induced aging by reducing inflammatory cytokines and inhibiting CYP1A1.
Research
Clinical Evidence
High confidence0.05-0.5%
Key findings
- 01 Effective in cosmetic and dermopharmaceutical products for acne prevention and treatment by decreasing hyperseborrhea via 5α-reductase inhibition.
- 02 Suggested effective usage levels in general skincare formulations.
- 03 Recommended for mattifying and oil-control formulas.
- 04 Recommended for balancing emulsions and masks.
- 05 Recommended for scalp and hair care applications.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Oleanolic acid is highly lipophilic and primarily oil-soluble, with limited solubility in water, necessitating incorporation into the oil phase of formulations. For aqueous products, laboratory synthesis, encapsulation, or pre-dispersion with solubilizers may be employed to enhance effectiveness. It exhibits sensitivity to elevated temperatures; processing is optimally performed below 65°C, although thermal stability up to 70°C is noted for extraction. Long-term stability of solutions is best maintained at -20°C, and stock solutions should be stored in airtight containers, ideally under an inert atmosphere, to minimize oxidative degradation. Fresh aqueous working solutions are recommended for daily preparation.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) has deemed olive-derived ingredients, including oleanolic acid, safe for use in cosmetics. Generally considered non-toxic with no widely reported genotoxicity, it is listed in FDA databases (GSRS, UNII) and its cosmetic use is reported to the FDA's Voluntary Cosmetic Registration Program (VCRP). While raw, concentrated forms may cause skin, eye, or respiratory irritation, these risks are typically not reflective of its use at cosmetic concentrations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Oleanolic acid is a valuable multi-functional ingredient, offering significant benefits for oily, acne-prone, and sensitive skin through its sebum-regulating, anti-inflammatory, and antioxidant properties, with a favorable safety profile.
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References
Sources