1,2-Hexanediol: effective % & pH 1,2-헥산다이올
⏱ 1 min read
⚡ Quick answer: 1,2-Hexanediol: effective concentration 0.3–2%, optimal pH 4.0–7.0, evidence Moderate. If a Korean product claims no preservatives, look for this and caprylyl glycol. That is the system, whatever the box says.
How much 1,2-Hexanediol actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | 0.3–2% |
|---|---|
| Optimal pH | 4.0–7.0 |
| Evidence | Moderate |
| Onset | immediate (feel) |
What the % on the label really means
If a Korean product claims no preservatives, look for this and caprylyl glycol. That is the system, whatever the box says.
⚠️ Ceiling: Pushing it much past 2% to carry the whole preservation load can sting sensitive skin — one reason preservative-free is not automatically gentler.
1,2-Hexanediol guide →How 1,2-Hexanediol works →
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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.