Glycerin: effective % & pH 글리세린
⏱ 1 min read
⚡ Quick answer: Glycerin: effective concentration 3–10% typical in leave-on formulas, optimal pH tolerant across the usual 4.0–7.0 range, evidence Strong. Glycerin high in an ingredient list is a good sign, not a cheap filler — it is the most reliably evidenced humectant in cosmetics.
How much Glycerin actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | 3–10% typical in leave-on formulas |
|---|---|
| Optimal pH | tolerant across the usual 4.0–7.0 range |
| Evidence | Strong |
| Onset | immediate (feel) — days for comfort |
What the % on the label really means
Glycerin high in an ingredient list is a good sign, not a cheap filler — it is the most reliably evidenced humectant in cosmetics.
⚠️ Ceiling: Above roughly 10% it starts to feel sticky and, in very dry air, can feel less comfortable rather than more.
Glycerin guide →How Glycerin works →
Sources: PubMed — Glycerin & 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.