Volcanic
Volcanic skincare is built around ash and clay quarried from Jeju's volcanic soil, a porous mineral powder that soaks up sebum and loosens what settles inside a pore. On this page the ingredient shows up across the whole routine: Innisfree's Super Volcanic Pore Clay Mask and its PHA toner and BHA cleansing foam, The Face Shop's Jeju Volcanic Soil pore foam and blackhead nose strips, Fruitland's Natural Island ash foam, plus body formats like Mugunghwa's volcanic ash soap and HAPPY BATH's Otermal scrub wash. Sort by how long the ash stays on skin: a rinse-off cleanser for daily use, a clay mask for weekly deep work.
By Skinsli editorial Updated
Buying guide
Volcanic Ash and Clay Skincare: How to Use It
Jeju is a volcanic island, and the scoria soil under it has become one of the most recognisable ingredients in Korean skincare. Ground fine, volcanic ash behaves like a mineral sponge: its pore structure holds many times its weight in oil, which is why it turns up in clay masks, foaming cleansers, nose strips and bar soaps rather than in leave-on creams. This guide covers what the ingredient actually does, which format suits which skin, and how to fit it into a routine without stripping your barrier.
What volcanic ash actually is
The material Korean brands call volcanic ash or volcanic soil is scoria, a porous basaltic rock weathered into powder. Under magnification it is full of open cells, and those cells are what do the work: oil and loosened debris migrate into them and rinse away with the product. It is a physical, adsorbent ingredient, not an acid and not an active in the retinol sense. That matters for expectations. Ash pulls oil off the surface and out of the pore opening. It does not dissolve a plug, and it does not change how much sebum your skin produces tomorrow.
Most of the grid sources from Jeju specifically, which brands treat as a provenance claim in the same way a French clay would be labelled. The Face Shop's Jeju Volcanic Soil line and Innisfree's Super Volcanic range both build on that, while Fruitland's Natural Island foam and Mugunghwa's soaps use ash without the Jeju framing.
The clay mask: weekly deep work
The Super Volcanic Pore Clay Mask is the format most people meet first. It goes on as a thick grey layer, sits for ten to fifteen minutes, and comes off with lukewarm water. This is the highest concentration of ash you will use, so it is also the one with the most potential to overdo. Once or twice a week is enough for oily skin, and once a fortnight is plenty if you are combination.
Two habits make it work better. Apply it to a damp face rather than a bone-dry one, which slows the mask down and stops it tightening painfully. And take it off before it cracks. A fully dried clay layer starts pulling water out of skin rather than oil, and that is where the post-mask tightness comes from.
Cleansers and foams for daily use
Ash cleansers are the sustainable daily option. Innisfree's Volcanic BHA Pore Cleansing Foam pairs the powder with salicylic acid, so it works on two fronts at once: the ash lifts surface oil, the BHA gets into the pore lining. The Face Shop's Jeju Volcanic Soil Anti-Dust Pore Cleansing Foam is pitched at city grime and skips the acid. Fruitland's Natural Island Volcanic Ash Pore Cleansing Foam sits between them as a plain ash foam.
Use these as your second cleanse in the evening, after an oil or balm has taken off sunscreen and makeup. Sixty seconds of massage is more useful than scrubbing. If your skin feels squeaky afterwards, the formula is too strong for daily use and should move to every other night.
Where the leave-on steps fit
Volcanic PHA Pore Refining Toner is the one leave-on product in this family, and it works differently from the rest. PHA is the gentlest of the common exfoliating acids, with a larger molecule that stays nearer the surface, so it suits people whose skin reacts to glycolic or salicylic. The volcanic mineral content here is doing less heavy lifting than in a mask; the acid is the main event.
Layer it straight after cleansing on damp skin, then follow with whatever hydrating step you normally use. Do not stack it on the same night as a clay mask and a BHA foam. Pick one exfoliating step per evening and let the others rotate.
Nose strips and targeted blackhead kits
The Face Shop's Jeju Volcanic Soil Blackhead three-stage kit is a different animal from the rest of the page: a sequence of a softening pad, an adhesive strip and a soothing pad, sold five sheets to a box. The Fresh Copac sits alongside it as a lighter version.
These give the most visible result and carry the most risk of irritation, because the adhesive removal step is mechanical. Two things keep them sensible. Use them no more than once a week, and never on skin that is currently broken out or peeling. The strip does not distinguish between a blackhead and a healing spot.
Volcanic ash on the body
Body formats on this grid are worth knowing about if back or chest congestion is the actual problem. Mugunghwa sells volcanic ash soap as bars, including a 24-piece box for anyone who has already decided it works, and as a 900ml shower soap. HAPPY BATH's Otermal Mediterranean Volcanic Rock Scrub Wash adds a physical grit to the same idea.
Body skin tolerates ash far better than the face does, so a daily ash bar is reasonable where a daily clay mask would not be. The scrub wash is the exception; treat it as a weekly step, and keep it off freshly shaved skin.
Who this works for, and who should skip it
Oily and combination skin with visible pores through the T-zone is the clear fit. Congestion that comes back a few days after extraction responds well to a regular ash cleanser, because the point is maintenance rather than a single dramatic clear-out.
Dry and dehydrated skin should approach carefully or stay away. Adsorbent minerals do not know the difference between excess sebum and the small amount of oil a dry face needs, and the result is a tight, flaky feel that then gets misread as needing more exfoliation. If you have active eczema, rosacea or a compromised barrier, the nose strips and the scrub wash are the two products to rule out first.
Building a week around it
A workable pattern for oily skin: ash foam in the evening most nights, PHA toner on two or three of those nights, clay mask once at the weekend, nose strip only when you can see something to remove. Everything else in the routine stays hydrating, because the whole family runs in the oil-removing direction and needs a counterweight.
Follow every ash step with something humectant and something occlusive. A hyaluronic essence and a plain moisturiser are enough. Skin that gets stripped and then left bare will produce more oil, which is the loop most people are trying to break when they buy these products in the first place.
Reading the labels on this page
Naming is inconsistent across brands, so a few translations help. Volcanic soil, volcanic ash and volcanic rock all point at the same scoria material. Super Volcanic is Innisfree's own range name rather than a strength grade. Copac is a transliteration that shows up on The Face Shop nose products and means a pack or strip.
Sizes cluster around a few standards: 100ml for the clay mask, 120 to 150ml for cleansing foams, 170ml for the toner, and much larger volumes for the body washes. If a listing carries a piece count rather than a volume, it is a sheet or bar multipack rather than a different formula.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
Is Jeju volcanic soil different from the clay in an ordinary clay mask?
Yes, though they overlap. Volcanic scoria from Jeju is a porous basaltic rock, so its oil uptake comes from a physical cell structure. Kaolin and bentonite clays are sedimentary and work partly through surface charge. In practice volcanic ash formulas such as the Super Volcanic Pore Clay Mask feel grittier and rinse cleaner, while a pure kaolin mask feels smoother and dries harder.
Should I pick the Volcanic BHA Cleansing Foam or the Volcanic PHA Toner?
They sit at different points in the routine. The BHA foam is a rinse-off cleanser, so the acid has only a minute of contact and the ash does most of the work on surface oil. The PHA toner stays on skin, and PHA is the milder acid of the two. If your skin is oily and tolerant, the foam nightly plus the toner two or three times a week is a reasonable split. If you react to salicylic acid, use the toner alone.
How often can I use the Super Volcanic Pore Clay Mask?
Once or twice a week for oily skin, once every two weeks for combination. Rinse it off while it is still slightly tacky rather than letting it crack, because a fully dried clay layer starts drawing water out of the skin as well as oil. If your face feels tight for hours afterwards, you either left it on too long or you are masking too often.
Are the Jeju Volcanic Soil blackhead strips safe to use weekly?
Weekly is the sensible ceiling. The three-stage kit softens, lifts with an adhesive strip, then soothes, and the lifting step is mechanical. Skip it entirely on skin that is currently broken out, peeling or freshly exfoliated, and never re-apply a second strip to the same patch in one session.
Can dry skin use anything on this page?
Cautiously. The PHA toner is the gentlest option, and a volcanic ash body soap on the back or chest is usually fine even when the face is dry. The clay mask, the BHA foam and the Otermal scrub wash are all built to remove oil and will make a dry face tighter. If you use one, keep it to a small congested area rather than the whole face and follow immediately with a humectant and a moisturiser.
What are the volcanic ash soaps and shower washes for?
Back, shoulder and chest congestion, mostly. Mugunghwa sells the ash soap as bars, including a 24-piece box, and as a 900ml shower soap; HAPPY BATH's Otermal Mediterranean Volcanic Rock Scrub Wash adds physical grit to the same idea. Body skin is thicker than facial skin, so daily use of an ash bar is reasonable where a daily face mask would not be. Keep the scrub wash weekly and off freshly shaved areas.
Can I use these alongside retinol or vitamin C?
Separate them by night rather than stacking. A volcanic clay mask or the BHA foam on the same evening as retinol is the combination most likely to leave you stinging. A workable rotation is ash cleanser and PHA toner on one night, retinol on another, and the clay mask on a night when nothing else active is happening. Vitamin C in the morning stays clear of all of it.
What does Copac mean on The Face Shop listings?
It is a transliteration meaning a nose pack or strip. Jeju Volcanic Soil Fresh Copac is the lighter single-step version, while the Blackhead 3-stage Copac is the five-sheet kit with a softening pad, a strip and a soothing pad. Both are nose treatments, not full-face masks.
How long before pores actually look smaller?
A clay mask or a nose strip gives an immediate visible change because it removes what is sitting in the pore opening, and that lasts a few days. The slower change, less oil through the day and less regular congestion, comes from a consistent ash cleanser and takes three to four weeks. Pore size itself is largely structural and will not shrink; what changes is how visible a clear pore is compared with a full one.