Polyglutamic Acid (PGA): effective % & pH 폴리글루탐산
⏱ 1 min read
⚡ Quick answer: Polyglutamic Acid (PGA): effective concentration 0.1–1% (it is effective at low levels), optimal pH 4.0–7.0, evidence Emerging. A tiny percentage does the job. Seeing PGA low on an ingredient list is not a red flag.
How much Polyglutamic Acid (PGA) actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | 0.1–1% (it is effective at low levels) |
|---|---|
| Optimal pH | 4.0–7.0 |
| Evidence | Emerging |
| Onset | immediate (feel) |
What the % on the label really means
A tiny percentage does the job. Seeing PGA low on an ingredient list is not a red flag.
⚠️ Ceiling: It is a large, viscous molecule — too much makes a formula tacky rather than more hydrating.
Polyglutamic Acid (PGA) guide →How Polyglutamic Acid (PGA) works →
Related K-beauty guides
Try the free tools
🪞 Find your skin type🧴 Build a routine🧪 Decode any INCI list⚗️ What not to mix🔮 Glass Skin Score🩺 Troubleshoot skin🛡️ Where to buy authentic
Explore more K-beauty guides →
⏭ Up next⚗️ Ectoin: effective % & pH 엑토인
✍️ 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.