# Mastrante essential oil

> An Ecuadorian herbal oil with a delicate mint-like aroma, traditionally diffused or applied for a calming, uplifting effect.

Canonical page: https://essential-oils.club/oils/single/mastrante

Type: Single oil

## At a glance

- **Botanical name:** Lippia alba
- **Plant part:** Whole herb
- **Extraction:** Steam-distilled
- **Aroma:** Mint, mild citrus-herb
- **Origin:** Ecuador (Andes)
- **Blends with:** Lemon, orange

## Composition

- Geranial (citral a): 22%
- Neral (citral b): 18%
- Limonene: 12%
- β-Caryophyllene: 6%
- Germacrene D: 5%
- Piperitone: 3%

Source: Memórias do Instituto Oswaldo Cruz — citral and carvone chemotypes of Lippia alba (2009) (https://doi.org/10.1590/s0074-02762009000600010)

## Chemotypes

- **ct. citral** — Lemony, citral-rich (geranial + neral); the type shown above, calling for lower dilution due to citral.
- **ct. carvone** — Minty-herbal, dominated by carvone and limonene; a distinctly different aroma.

## How to use it

- **In the diffuser:** 3–5 drops for a light, fresh herbal note that blends well with citrus oils.
- **On skin:** Dilute to 2–3% in a carrier oil for massage or topical use, and patch-test first.

## Safety

- For topical use, dilute to 2–3% in a carrier oil and patch-test first.
- Maximum dermal use: Dilute in a carrier oil for skin (lower for the citral chemotype).
- The citral chemotype contains citral, a skin sensitiser — dilute low and patch-test.
- Not phototoxic. Keep out of reach of children.

## What the research says

- Lippia alba (mastrante) oil has been studied for antimicrobial and calming-related activity in the laboratory, with results depending heavily on chemotype. These are in-vitro findings, not clinical claims. — Memórias do Instituto Oswaldo Cruz (2009) (https://doi.org/10.1590/s0074-02762009000600010)

## Evidence

- Mastrante (Lippia alba) exists as distinct citral and carvone chemotypes, so two bottles can differ sharply in both aroma and chemistry. — Memórias do Instituto Oswaldo Cruz (2009) (https://doi.org/10.1590/s0074-02762009000600010)

## Frequently asked questions

### Why can mastrante smell so different between bottles?

Lippia alba has distinct chemotypes — a lemony citral type and a minty carvone type. Depending on which the plant is, the oil can smell citrusy or minty-herbal, so check the source.

### Is mastrante gentle on skin?

The citral chemotype contains citral, a known sensitiser, so dilute low and patch-test. The carvone type is a different profile but still worth diluting.

### Is mastrante phototoxic?

No — mastrante isn't phototoxic. For the citral chemotype the main precaution is citral sensitisation, which calls for low dilution.

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