Green Tea: effective % & pH 녹차
⚡ Quick answer: Green Tea: effective concentration varies (extract; serums commonly ~1–5% extract, essences higher), optimal pH 5.0–6.5, evidence Moderate. A green-tea % tells you little about active polyphenols; freshness and formulation (dark packaging) matter more than the number on the label.
How much Green Tea actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | varies (extract; serums commonly ~1–5% extract, essences higher) |
|---|---|
| Optimal pH | 5.0–6.5 |
| Evidence | Moderate |
| Onset | 2–4 weeks (antioxidant/calming look) |
What the % on the label really means
A green-tea % tells you little about active polyphenols; freshness and formulation (dark packaging) matter more than the number on the label.
⚠️ Ceiling: Polyphenol (EGCG) content and stability matter more than headline extract %.
Green Tea guide →How Green Tea works →
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Explore the full K-beauty hub →✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed 2026-06-21.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.