Kaolin Clay vs Jeju Volcanic Ash (Songi): which Korean skincare ingredient?
⏱ 1 min read
⚡ Quick answer: Kaolin Clay vs Jeju Volcanic Ash (Songi): Kaolin Clay leans toward oil control, while Jeju Volcanic Ash (Songi) targets oil control. Can you use both? Yes — they layer well together.
Kaolin Clay vs Jeju Volcanic Ash (Songi): Kaolin Clay leans toward oil control, while Jeju Volcanic Ash (Songi) targets oil control. Can you use both? Yes — they layer well together.
| Kaolin Clay | Jeju Volcanic Ash (Songi) | |
|---|---|---|
| What it is | The gentlest of the common cosmetic clays, and the one Korean wash-off masks lean on when they want oil control without a stripped face. Kaolin soaks up sebum sitting on the surface. It does not reach into a pore, dissolve a blackhead or shrink anything — those are jobs for a BHA, if they are jobs at all. | 화산송이 (hwasan songi) is the reddish porous scoria that covers parts of Jeju, and it became a Korean beauty signature the way volcanic mud did in Iceland — through provenance as much as chemistry. As an oil absorber it works. As proof of anything about Jeju's air or water, it is a story sold with a mask. |
| Best for | Oil control, Pores & texture, Blackheads & sebaceous filaments | Oil control, Pores & texture, Blackheads & sebaceous filaments |
| When to use | PM | PM |
Which should you choose?
Choose Kaolin Clay if your priority is Oil control; choose Jeju Volcanic Ash (Songi) for Oil control. Many Korean routines use both — yes — they layer well together.
Kaolin Clay guide →Jeju Volcanic Ash (Songi) guide →
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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.