Disodium EDTA: effective % & pH 디소듐 EDTA
⏱ 1 min read
⚡ Quick answer: Disodium EDTA: effective concentration 0.05–0.2%, optimal pH works best above pH 4.0, evidence Strong. Near the end of the list, at a whisper of a percentage, doing a job that keeps your vitamin C serum alive. Ignore the scare posts.
How much Disodium EDTA actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | 0.05–0.2% |
|---|---|
| Optimal pH | works best above pH 4.0 |
| Evidence | Strong |
| Onset | not applicable — it protects the formula |
What the % on the label really means
Near the end of the list, at a whisper of a percentage, doing a job that keeps your vitamin C serum alive. Ignore the scare posts.
⚠️ Ceiling: More does nothing useful; it is used at the smallest effective level.
Disodium EDTA guide →How Disodium EDTA 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.