In our reference data, Melaleuca Alterniflora Oil can feed Malassezia (fungal acne).
Melaleuca Alternifolia (Tea Tree) Oil is a steam-distilled essential oil from the Australian tea tree, valued in skincare for its antibacterial, antifungal, and anti-inflammatory properties, commonly used in acne and minor skin infection treatments. Its primary active constituent is terpinen-4-ol.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation (redness, stinging, dryness) | Common | More likely with higher concentrations or undiluted application. |
Allergic contact dermatitis | Uncommon | Risk increases with oxidized oil; sensitization to oxidation products like ascaridole is documented. |
Contact urticaria | Rare | Localized hives following topical exposure. |
Systemic toxicity if ingested | Rare | Oral ingestion can cause ataxia, drowsiness, and CNS effects; topical use is for external application only. |
Possible endocrine/hormonal effects | Very rare | Case reports of prepubertal gynecomastia associated with topical tea tree and lavender oils; evidence remains limited and debated. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.