Sodium PCA: effective % & pH 소듐 PCA
⏱ 1 min read
⚡ Quick answer: Sodium PCA: effective concentration 0.2–2%, optimal pH 4.0–7.0, evidence Moderate. A quality signal in a hydrating toner rather than a reason to buy one. It works with glycerin, not instead of it.
How much Sodium PCA actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | 0.2–2% |
|---|---|
| Optimal pH | 4.0–7.0 |
| Evidence | Moderate |
| Onset | immediate (feel) |
What the % on the label really means
A quality signal in a hydrating toner rather than a reason to buy one. It works with glycerin, not instead of it.
⚠️ Ceiling: Very high levels can feel tacky and, in dry air, are no more comfortable than moderate ones.
Sodium PCA guide →How Sodium PCA 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.