Tea tree-derived botanical ingredient valued for antimicrobial, antibacterial, and anti-inflammatory properties, commonly used in formulations targeting acne and oily skin. The flower-derived material shares constituents (notably terpinen-4-ol) with the more widely studied tea tree oil.
| Reported effect | How often | Notes |
|---|---|---|
| Contact/irritant dermatitis | Common | Redness, dryness, stinging, or itching, especially with higher concentrations or undiluted use. |
| Allergic contact dermatitis (sensitization) | Uncommon | Oxidized tea tree components can act as allergens; risk increases with aged or improperly stored product. |
| Dryness or peeling | Common | May occur particularly when combined with other actives or on sensitive skin. |
| Photosensitivity or worsened pre-existing dermatitis | Rare | Occasionally reported flares of eczema or sensitive-skin reactions. |
| Systemic toxicity from ingestion | Very rare | Toxic if swallowed; relevant only to accidental oral exposure, not topical cosmetic use. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.