Tea Tree: effective % & pH 티트리
⏱ 1 min read
⚡ Quick answer: Tea Tree: effective concentration 0.5–5% in rinse-off and spot formats; EU safety advice puts the ceiling for leave-on face products far lower, at 0.1%, optimal pH 4.0–6.5, evidence Moderate. Never apply neat tea tree oil to your face. Use it inside a formulated product where the dilution has been done for you.
How much Tea Tree actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | 0.5–5% in rinse-off and spot formats; EU safety advice puts the ceiling for leave-on face products far lower, at 0.1% |
|---|---|
| Optimal pH | 4.0–6.5 |
| Evidence | Moderate |
| Onset | 4–8 weeks |
What the % on the label really means
Never apply neat tea tree oil to your face. Use it inside a formulated product where the dilution has been done for you.
⚠️ Ceiling: Undiluted or high-percentage tea tree oil is a well-documented irritant and sensitiser.
Tea Tree guide →How Tea Tree works →
Sources: PubMed — Tea Tree & skin ↗ · AAD skin-care basics ↗
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✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed: 2026-08-23.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.