Melaleuca alternifolia (tea tree) extract is derived from the Australian tea tree and is valued in skincare for its antibacterial, antifungal, and anti-inflammatory properties. It is commonly used to address acne, minor skin infections, and oily skin conditions.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation (redness, stinging, burning) | Common | Especially with higher concentrations or undiluted use; more likely on sensitive skin. |
Dryness or peeling | Common | Can occur with frequent application due to drying effect on skin. |
Allergic contact dermatitis | Uncommon | Risk increases with oxidized product; oxidation products are key sensitizers. |
Contact urticaria | Rare | Immediate hypersensitivity reaction reported in isolated cases. |
Systemic toxicity if ingested | Very rare | Oral ingestion can cause ataxia and CNS effects; topical use does not carry this risk but product should not be swallowed. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.