Hyaluronic Acid: effective % & pH 히알루론산
⏱ 1 min read
⚡ Quick answer: Hyaluronic Acid: effective concentration 0.1–2% (as raw HA; finished serums often ~1–2%), optimal pH 5.0–7.0, evidence Strong. HA percentages look tiny because a little goes a long way; a '2% HA complex' is already high — apply to damp skin and seal to see the benefit.
How much Hyaluronic Acid actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | 0.1–2% (as raw HA; finished serums often ~1–2%) |
|---|---|
| Optimal pH | 5.0–7.0 |
| Evidence | Strong |
| Onset | Immediate (surface plumping) |
What the % on the label really means
HA percentages look tiny because a little goes a long way; a '2% HA complex' is already high — apply to damp skin and seal to see the benefit.
⚠️ Ceiling: Past ~2% it gets sticky/tacky and can feel drying in low humidity — more isn't more hydration.
Hyaluronic Acid guide →How Hyaluronic Acid 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.