A recent 2025 study evaluated the efficacy of lavender hydrosol and essential oil in oil-in-water emulsions as a promising solution for cosmetic preservation.
Key Findings from the Study
- The combination of lavender hydrosol and lavender essential oil achieved significant antimicrobial effects.
- It reduced E. coli, Staphylococcus aureus, Candida albicans, and Pseudomonas aeruginosa to under 10 CFU/mL within 14 days.
- Results exceeded the European Pharmacopoeia B criteria, indicating robust preservative action.
How Lavender Preserves Formulations
Lavender essential oil contains:
- Linalool and linalyl acetate (soothing, antimicrobial)
- Terpinen-4-ol (antibacterial)
- Lavandulol and camphor (antifungal, deodorizing)
These compounds work synergistically to offer:
- Broad-spectrum antimicrobial protection
- Skin-soothing benefits
- A natural, calming fragrance
Limitations and Considerations
- Lavender oil showed limited activity against Aspergillus niger, suggesting a need for combination strategies.
- Efficacy varies by source and composition—standardization is critical.
- Further research is recommended for long-term stability and resistance development.
- To find natural multifunctionals effective against Aspergillus Niger explore our compendium selecting the option for antifungal antimicrobial activity.
Conclusion
Lavender essential oil, especially when combined with lavender hydrosol and an antifungal, presents a viable natural preservative system for emulsions and skincare products. It aligns well with consumer demand for natural, paraben-free, and clean beauty formulations.
The article was published on the Journal of Dermatologic Science and Cosmetic Technology
Volume 2, Issue 2, June 2025, 100084