Skin sensitization and nervous system damage. According to the query related information data show that citronellol composition contains citronellol, easy to lead to skin allergies, and in severe cases there will be coughing, breathing difficulties and other symptoms, irreversible damage to the eyes. In high concentrations, it can lead to neurological damage and symptoms such as seizures, slurred speech and tremors. Citronellol is a terpene. Natural essential oils contain either dextro or levocitronellol and its racemates. Dextro-citronellol is found mainly in rue oil, citronella oil and lemon eucalyptus oil.