How essential oil works — illustrated mechanism of action
Geraniol is a naturally occurring terpene found in geraniums, roses, citronella, and lemongrass. EPA research shows it's one of the most effective plant-based mosquito and tick repellents — significantly outperforming citronella in head-to-head studies.
How essential oil works — illustrated mechanism of action
Mosquitoes (strong repellent — outperforms citronella by 2-5x in studies), ticks (proven repellent in multiple studies), flies (good repellent), gnats, ants (moderate). Several studies show geraniol approaching DEET effectiveness for mosquito repellency at 20%+ concentrations.
Proven Insect Repellent (geraniol-based, consumer reports top rated natural), Bug Band, Skin So Soft Bug Guard Plus (contains geraniol), Buggins Natural insect repellent, ThermaCell natural refills. Pure geraniol essential oil for DIY applications.
Excellent safety profile. FDA GRAS as a food flavoring. Widely used in cosmetics and perfumes. Minimal skin sensitization risk. Safe around children and most pets. Pleasant floral/rose scent that most people find agreeable — unlike DEET.
Why geraniol over citronella: Head-to-head tests consistently show geraniol provides 2-5 times longer protection than citronella against Aedes mosquitoes. A 2020 USDA study found 25% geraniol provided 4+ hours of mosquito protection — approaching low-concentration DEET.
For ticks: Geraniol shows genuine tick-repellent activity. A 2016 Journal of Medical Entomology study found geraniol reduced tick attachment by 90%+ in field conditions. One of the few natural ingredients with credible tick data.
Formulation matters: Pure geraniol evaporates quickly. Commercial products use encapsulation and slow-release formulations to extend duration. Pre-formulated products significantly outperform DIY geraniol sprays for this reason.