Mugunghwa Volcanic
Mugunghwa's Volcanic collection covers products formulated with Jeju volcanic ash and volcanic pine as the primary cleansing actives. The 7 products span the Shower Soap Volcanic Ash (in 500ml and 900ml liquid formats plus a 450ml refill), the Jeju Volcanic Pine Soap 100g bar, and two combination products pairing volcanic ingredients with Dead Sea salt. Volcanic ash from Jeju Island is a traditional Korean skin care ingredient known for absorbing sebum and impurities through its highly porous particle structure.
By Skinsli editorial Updated
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Buying guide
Mugunghwa Volcanic Ash Products: Jeju Volcanic Cleansing Guide
Mugunghwa's Volcanic collection centers on Jeju Island volcanic ash as a skin care active. Jeju volcanic ash (hwasanso, 화산소) has been used in Korean cleansing since the island's spa culture developed around its volcanic mineral springs and stone. The 7 products in this collection bring that ingredient into shower soap format - both liquid and bar - and in combination with Dead Sea salt minerals for a dual-mineral cleansing approach.
How Jeju volcanic ash works as a cleansing ingredient
Volcanic ash from Jeju Island is composed of highly porous silicate particles from the island's basalt volcanic activity. The porous structure creates a large surface area per particle, which adsorbs (attracts and holds on the surface) excess sebum, dust, and particulate impurities from the skin. This adsorption mechanism is different from surfactant cleansing - the ash physically captures oil-based impurities rather than emulsifying them for rinsing. When combined with a surfactant base in a shower soap, the volcanic ash provides dual action: surfactants clean water-soluble impurities while ash absorbs oil-based impurities. The result is a more thorough cleanse than a surfactant-only formula for oily or sebum-prone skin.
Shower Soap Volcanic Ash 500ml: the standard liquid format
The Mugunghwa Shower Soap Volcanic Ash in 500ml is the core liquid product in the volcanic collection. It delivers the ash-and-surfactant dual cleansing action in a pump-dispenser format for regular shower use. A 500ml bottle provides approximately 50-80 uses depending on application amount. For oily body skin or skin that feels heavy or congested after a day of activity, the volcanic ash formula provides a noticeably more cleansing wash than standard moisturizing body washes. It is best for normal to oily body skin; for dry body skin, the Dead Sea salt or milk soap variants are more appropriate.
Shower Soap Volcanic Ash 900ml: economy size and the old formula variant
The 900ml size gives nearly double the supply of the 500ml at a lower per-ml cost, suited for regular daily users. The collection includes a "Volcanic shower Soap (old) 900ml" variant - this is a previous formula generation still available from remaining inventory. The standard 900ml Shower Soap Volcanic Ash is the current production. When both are available, the current production (without the "old" label) is the recommended choice. Formula differences between old and new are not published by the brand.
Shower Soap Volcanic Ash Refill 450ml: sustainable restocking
The 450ml refill is a packaging-reduced restocking option for regular Volcanic Ash Shower Soap users who have kept their pump bottle. The refill dispenses into an existing bottle rather than requiring a new pump dispenser with each purchase. At approximately the same volume as a used 500ml bottle, the 450ml refill simplifies the restock calculation. For households using the Volcanic Ash Shower Soap as a daily cleansing product, the refill cycle reduces total plastic use over time and tends to have a lower per-ml price than buying a full bottle.
Jeju Volcanic Pine Soap 100g: the bar soap format
The Jeju Volcanic Pine Soap is the bar soap format in the volcanic collection, combining volcanic ash with Jeju pine extract. In bar form, the volcanic particles provide light physical exfoliation alongside the ash adsorption effect - the slightly gritty texture of the bar helps dislodge surface dead skin cells while the ash draws out sebum. Jeju pine adds an astringent botanical note that further supports pore-tightening and a clean finish. The bar soap is most effective on rough body areas - elbows, knees, heels - where the combination of physical exfoliation and mineral cleansing gives better results than liquid soap. At 100g it is standard single-bar size.
Combination products: Dead Sea Salt + Volcanic Pine and Dead Sea + Volcano
Two combination products bring volcanic and Dead Sea salt actives together. The Shower Soap 500ml Dead Sea Salt + Volcanic Pine pairs the mineral salt conditioning of Dead Sea salt with the sebum-adsorbing volcanic ash and pine astringency in a single formula. The Shower Soap 900ml Dead Sea + Volcano "à la carte" is the larger economy version of the same combined approach. These combination products suit people whose skin has both dryness concerns (addressed by Dead Sea salt minerals) and oiliness or congestion concerns (addressed by volcanic ash). Rather than alternating two different soaps, the combination formula addresses both needs in a single product.
When to choose volcanic ash products over Dead Sea salt products
The two Mugunghwa active systems serve different primary skin conditions. Volcanic ash products target sebum and oiliness - they are best for oily, combination, or congested body skin where impurity removal is the priority. Dead Sea salt products target mineral conditioning and texture improvement - they are best for dry, rough, or mineral-deficient skin where hydrating mineral ions are the goal. For skin that is simultaneously oily in some areas and dry in others - common on the back and chest - the combination Dead Sea Salt + Volcanic products provide both effects in one formula. The standalone volcanic ash products are better when oiliness is the sole concern and additional mineral conditioning is not needed.
Using Mugunghwa Volcanic Ash Shower Soap after exercise
Post-exercise skin has elevated sebum production, sweat-mixed sebum in pores, and environmental particulate from outdoor activity that standard shower soaps can leave behind. The volcanic ash adsorption mechanism in the Mugunghwa Volcanic Ash Shower Soap is specifically effective in this context because it captures the sebum-particulate mix that regular surfactant washes only partially remove. Using the volcanic ash liquid soap on the back, chest, and shoulders after exercise - the areas where sweat-mixed sebum is most concentrated - gives a more thorough post-workout cleanse. For the face, a dedicated facial pore cleanser with volcanic clay is the more appropriate format.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
Is the Mugunghwa Shower Soap Volcanic Ash 500ml effective for oily, acne-prone back skin?
Yes, the Volcanic Ash Shower Soap is one of the most targeted options in the Mugunghwa range for oily, acne-prone body skin - particularly the back and chest where sebaceous glands are densest. The volcanic ash particles adsorb excess sebum from the skin surface and inside pores, while the surfactant base removes sweat and surface debris. Using it with a back scrubber or loofa and allowing 30-60 seconds of contact before rinsing improves the deep-cleansing effect. It is not a medicated acne treatment (no salicylic acid or benzoyl peroxide), but as a cleansing step it removes the sebum buildup that contributes to bacne.
Can the Jeju Volcanic Pine Soap 100g be used on the face, or is it body-only?
The Jeju Volcanic Pine Soap's gritty physical exfoliation texture makes it too harsh for regular facial use - the volcanic particles that work well on the thicker, more resilient skin of the body would be abrasive on facial skin, especially if used daily. For the body, it is well-suited. For the face, a dedicated gentle facial cleanser with volcanic ash or clay in a smooth paste or foam formula is the appropriate format. Using the bar occasionally on the T-zone or chin as a once-a-week treatment spot-cleanse is possible but should be approached cautiously for sensitive facial skin.
Does the Dead Sea Salt + Volcanic Pine Shower Soap 500ml work for combination skin that is oily on the back and dry on the legs?
The Dead Sea Salt + Volcanic Pine combination is specifically suited for this scenario. The volcanic pine targets the oily-prone areas (back, chest) while the Dead Sea salt minerals support the drier areas (shins, forearms, lower legs). Because it is a single body wash applied across the whole body, the formula delivers both effects in one step rather than requiring separate products for different body zones. This is the key advantage of the combination product over the standalone volcanic ash or Dead Sea salt soaps - it handles the mixed-condition body skin without zone-specific product application.
Is there a reason to choose the Mugunghwa Volcanic Shower Soap (old) 900ml over the current 900ml?
There is no published reason to prefer the old formula over the current production. The "old" listing is remaining inventory of a previous version still being sold through. Some long-term users who have been using the old formula may notice a preference for the original formula texture or scent, but for new buyers the current 900ml Shower Soap Volcanic Ash is the recommended starting point. If both are available at similar prices, choose the current production.
Can the Shower Soap Volcanic Ash Refill 450ml be used to refill any pump bottle, or only Mugunghwa bottles?
The refill liquid is compatible with any standard pump dispenser bottle with a wide enough opening. It does not require a specifically Mugunghwa-branded bottle. If you have used a Mugunghwa 500ml or 900ml pump bottle previously, refilling it with the 450ml refill is the intended use. Standard foam pump dispensers require dilution with water; standard liquid soap pumps work directly with the undiluted refill. The refill consistency should match the pump type you already use - do not put the undiluted liquid into a foaming pump without diluting.
How does the sebum-absorption of Mugunghwa Volcanic Ash Shower Soap compare to a dedicated volcanic clay face mask?
A dedicated volcanic clay face mask applied for 10-15 minutes and then rinsed provides substantially more sebum absorption than a rinse-off body soap - the extended dwell time in a mask allows more complete adsorption into the porous clay or ash particles. The Mugunghwa Volcanic Ash Shower Soap is optimized for rinse-off body cleansing with 30-60 seconds of contact, delivering meaningful but not equivalent sebum removal compared to a dedicated mask treatment. The shower soap is appropriate as a daily cleansing tool for oily body skin; a face mask is a separate treatment-focused product for deeper periodic cleansing of facial pores.
For a two-person household using the Volcanic Ash Shower Soap daily, is the 900ml size sufficient for a month?
For two people using the volcanic ash shower soap daily, a 900ml bottle lasts approximately four to six weeks depending on how much is used per shower. Full-body application with a loofah uses more product per session (around 15-20ml) than hand application. At two people at 15ml per shower each, a 900ml bottle provides about 30 uses per person - roughly one month of daily use for both people. For a household where the volcanic ash soap is the primary body wash, buying the 900ml once a month or the refill 450ml every two weeks is the practical restocking cycle.