In our reference data, Melaleuca Alternifolia (Teatree) Leaf Oil can feed Malassezia (fungal acne).
Tea tree oil is an essential oil distilled from the leaves of Melaleuca alternifolia, valued in skincare for its antibacterial, antifungal, and anti-inflammatory properties. It is commonly used in formulations targeting acne, minor skin infections, and oily skin.
| Reported effect | How often | Notes |
|---|---|---|
Allergic contact dermatitis | Uncommon | Risk increases with oxidized oil; sensitization to oxidation products such as ascaridole is well documented. |
Skin irritation (redness, stinging, dryness) | Common | More likely with undiluted or high-concentration application. |
Contact urticaria | Rare | Immediate hypersensitivity reactions occasionally reported. |
Systemic toxicity from ingestion | Very rare | Reported with accidental oral ingestion, not topical use; can cause ataxia and CNS depression. |
Possible endocrine (estrogenic/antiandrogenic) effects | Very rare | Linked in limited case reports to prepubertal gynecomastia; evidence remains debated. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.