In our reference data, Melaleuca Alternifolia (Tea Tree) Essential Oil can feed Malassezia (fungal acne); is a fragrance ingredient.
Tea tree essential oil is a volatile oil derived from the Australian Melaleuca alternifolia plant, valued for its antibacterial, antifungal, and anti-inflammatory properties, particularly against acne-causing bacteria. It is commonly used in topical formulations targeting acne, minor skin infections, and oily skin.
| Reported effect | How often | Notes |
|---|---|---|
| Contact dermatitis / skin irritation | Common | Redness, stinging, or dryness, especially with undiluted or high-concentration use. |
| Allergic contact dermatitis (sensitization) | Uncommon | Risk increases with oxidized oil; oxidation products are more allergenic. |
| Dryness or peeling | Common | Particularly when applied neat or alongside other drying actives. |
| Photosensitivity-related reactions | Rare | Generally low phototoxic potential, but reactions occasionally reported. |
| Systemic toxicity if ingested | Very rare | Oral ingestion can cause ataxia and CNS depression; topical use only. |
| Endocrine-related effects (e.g., prepubertal gynecomastia) | Very rare | Reported in isolated case studies; causation debated and not firmly established. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.