# Eucalyptus Blue essential oil

> A milder, cooler eucalyptus species sourced from Ecuador, offering a fresher, less intense alternative to E. globulus.

Canonical page: https://essential-oils.club/oils/single/eucalyptus-blue

Type: Single oil

## At a glance

- **Botanical name:** Eucalyptus bicostata
- **Plant part:** Leaves
- **Extraction:** Steam-distilled
- **Aroma:** Cool, fresh
- **Origin:** Ecuador
- **Blends with:** Lemon, grapefruit, peppermint

## Composition

- 1,8-Cineole (eucalyptol): 78%
- α-Pinene: 8%
- Limonene: 4%
- p-Cymene: 3%
- Aromadendrene: 2%

Source: Jerbi et al. (2017), Journal of Essential Oil Bearing Plants (https://doi.org/10.1080/0972060x.2017.1304832)

## Key constituents

- **1,8-Cineole (Eucalyptol)** — The primary aromatic compound, at a lower concentration than in stronger eucalyptus species, giving Eucalyptus Blue its milder character
- **Alpha-pinene** — Contributes a fresh, pine-like facet

## How to use it

- **In the diffuser:** 3–5 drops alone, or with a citrus oil like lemon or grapefruit for a fresh, uplifting blend.
- **On skin:** Dilute in a carrier oil for a cooling addition to light massage blends after activity.

## Safety

- Even at its gentler concentration, dilute before topical use and avoid application near the face of infants and young children.
- Maximum dermal use: Dilute well before topical use.
- Very high in 1,8-cineole: never apply near the face, nose, or chest of infants and young children.
- Never ingest; keep out of reach of children.
- Not phototoxic.

## What the research says

- As a cineole-rich eucalyptus, its main constituent 1,8-cineole has been studied for respiratory support in isolation. Findings are preliminary and specific to the compound, not proof the oil treats illness. — Fischer & Dethlefsen (2013), Cough (https://doi.org/10.1186/1745-9974-9-25)

## Evidence

- 'Eucalyptus Blue' (E. bicostata) is a high-cineole eucalyptus, dominated by 1,8-cineole like the other clearing eucalyptus types. — Jerbi et al. (2017), Journal of Essential Oil Bearing Plants (https://doi.org/10.1080/0972060x.2017.1304832)
- Cineole-rich eucalyptus carries a documented safety caution around the faces of infants and young children. — Balacs (1997), International Journal of Aromatherapy (https://doi.org/10.1016/s0962-4562(97)80020-3)

## Frequently asked questions

### What is 'Eucalyptus Blue'?

It refers to Eucalyptus bicostata, a high-cineole eucalyptus with a fresh, clearing aroma. Like other eucalyptus oils it's dominated by 1,8-cineole and used mainly for a bright, invigorating scent.

### Is Eucalyptus Blue safe around children?

Because it's cineole-rich, avoid applying it near the faces or noses of infants and young children, and never let a child ingest it. Diffuse in a ventilated room and keep it out of reach.

### Is Eucalyptus Blue phototoxic?

No — it isn't phototoxic. The main precaution is its cineole content around young children, not sun exposure.

_Educational reference only — not medical advice. Essential oils are not intended to diagnose, treat, cure or prevent any disease._