Jeju Volcanic Ash (Songi): effective % & pH 화산송이
⏱ 1 min read
⚡ Quick answer: Jeju Volcanic Ash (Songi): effective concentration not standardised — commonly a visible share of Jeju-positioned masks and scrubs, optimal pH 4.0–8.0, evidence Limited. Works like any porous mineral. The Jeju provenance is a story you may enjoy paying for, which is fine as long as you know that is what it is.
How much Jeju Volcanic Ash (Songi) actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | not standardised — commonly a visible share of Jeju-positioned masks and scrubs |
|---|---|
| Optimal pH | 4.0–8.0 |
| Evidence | Limited |
| Onset | immediate (during use) |
What the % on the label really means
Works like any porous mineral. The Jeju provenance is a story you may enjoy paying for, which is fine as long as you know that is what it is.
⚠️ Ceiling: In a scrub, coarser particles at higher levels risk scratching skin — a texture decision with real consequences.
Jeju Volcanic Ash (Songi) guide →How Jeju Volcanic Ash (Songi) 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.