Mandelic Acid: effective % & pH 만델릭애씨드
⏱ 1 min read
⚡ Quick answer: Mandelic Acid: effective concentration 5–10% in leave-on formulas, optimal pH 3.5–4.0, evidence Moderate. Its selling point is slowness. If you want fast, you want a different acid — and probably more redness.
How much Mandelic Acid actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | 5–10% in leave-on formulas |
|---|---|
| Optimal pH | 3.5–4.0 |
| Evidence | Moderate |
| Onset | 4–8 weeks |
What the % on the label really means
Its selling point is slowness. If you want fast, you want a different acid — and probably more redness.
⚠️ Ceiling: Above about 10% the irritation trade-off starts to outweigh the gentleness that makes mandelic worth choosing.
Mandelic Acid guide →How Mandelic 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.