Medicube
Zero Foam Cleanser$14.11Numbuzin
No.5 Glutathione C Facial Spa Cleanser 200ml
Numbuzin No.5 Glutathione C Facial Spa Cleanser 200ml is a cleanser that names Glutathione on its own ingredient panel, sourced as the Korean-market formula.
No reviews yet200 ml
$21.25 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- normalcombinationdryoily
- Helps with
- tone and texture supported by Glycerindaily hydration through the skincare formula stepa Korean-market formula rather than a US reformulationa routine step matched to this format
In stock. Arrives in 3 to 7 business days
We accept
You’re $100.00 away from free US shipping.
- 30-day returns
- Free US shipping on orders of $100 or more
- Tracked delivery to your door
How it works
Glutathione is named on the ingredient panel on this cleanser. Glutathione is a small peptide the body uses as one of its main antioxidants. In skincare it is used as an antioxidant and for the look of dullness; it is unstable in water, so formulas that carry it are usually built around protecting it. On this panel it sits alongside Stearoil Inulin, Tocopherol and Ascorbic Acid. Inulin is a plant fructan, most often from chicory root. It holds water and, in a formula, feeds the beneficial bacteria on the surface.
Key benefits
- Glutathione named on this product's own ingredient panel
- Stearoil Inulin on the same panel, the formula's polysaccharide
- Tocopherol on the same panel, the formula's antioxidant
- 200 ml to a unit
- Korean GS1 barcode matched against a Korea sourcing supplier's record for this item
Inside the formula
Inside the formula
When in a routine should I use this skincare formula?
Use it as the routine step, AM and PM, worked into the wider routine. Placing a skincare formula out of order is the most common reason a Korean routine feels like it is not working, so keep this one at its own step rather than doubling it up with a product built for a different stage. Give it a few weeks at that placement before judging the result.
Is this the same formula sold in Korea, or a US version?
This is the exact Korean-market formula, not a US-shelf reformulation. Numbuzin sells a separate reformulation on some US shelves, and this listing is not that version. The Korean-market batch coding and packaging travel with it, which is the detail worth checking against the box on arrival.
Where does this formula come from?
It comes from the Korean-market catalog rather than a US-shelf reformulation, and the packaging carries the same Korean-market batch coding a shopper would find on the box in Korea. That sourcing is checked on this row before the page is written, not assumed from the product name. It is the detail worth checking against the box on arrival.
What does Glutathione do in this formula?
Glutathione is a small peptide the body uses as one of its main antioxidants. In skincare it is used as an antioxidant and for the look of dullness; it is unstable in water, so formulas that carry it are usually built around protecting it. It is named on this product's own ingredient panel.
What does Tocopherol do in this formula?
Tocopherol is vitamin E, an antioxidant commonly paired into Korean formulas to round out a light stability system. It is one of the most common antioxidant inclusions in Korean formulation, usually present in a supporting rather than a headline role. It sits at its own position on this product's own ingredient list rather than being assumed from the product name.
Not on the ingredient list below: fragrance or parfum, denatured or SD alcohol, essential oils, silicones, parabens, sulfate surfactants, mineral oil or petrolatum and added color.
Full INCI (42): Cetyl Hexanoate, Silica S-30 Tetraoleate, Glycerin, Triethyl Hexanoate, Polyglyceryl-10 Diisostearate, Dipropylene Glycol, Diisostearyl Maleate, Caprylic/Capric Triglyceride, Sunflower Seed Oil, Glyceryl Behenate/Eicosadioate, Olive Oil, Jojoba Seed Oil, Stearoil Inulin, Lavender Oil, Lemon Peel Oil, Sea Buckthorn Fruit Oil, Polyglyceryl-10 Behenate/Eicosadioate, Philippine Orange Peel Oil, Atlas Cedarwood Oil, Caprylyl Glycol, Ethylhexylglycerin, Orange Peel Oil, Rosemary Leaf Oil, Purified Water, Candida Bombicola/Glucose/Methylrape Seed Fermentation Water, Tocopherol, 1,2-Hexanediol, Ascorbic Acid, Hydroxypropyl Cyclodextrin, Glutathione, Disodium EDTA, Niacinamide, Panthenol, Linoleic Acid, Biotin, Tocopheryl Acetate, Cyanocobalamin, Limonene, Linalool, Citral, Geraniol, Citronellol
Ingredient list read from jolse.com on 10 September 2026.
28 of 42 explained
- Glycerin humectant
- Glycerin is the most used humectant in skincare. It draws water into the outer layer of skin and holds it there, and it is one of the very few ingredients whose hydrating effect is settled science rather than marketing. Higher amounts feel tacky, which is why it is usually blended.
- Polyglyceryl-10 Diisostearate emulsifier
- A polyglycerin ester carrying two fatty chains, which makes it more oil-loving than the single-chain version. It suits cleansing oils and rich creams.
- Dipropylene Glycol humectant
- Dipropylene Glycol is a glycol used as a solvent and a light humectant. Its main job is keeping the rest of the formula dissolved and the texture fluid rather than adding hydration of its own.
- Caprylic/Capric Triglyceride emollient
- Caprylic/Capric Triglyceride is the light fraction of coconut oil, with the heavy parts removed. It is the workhorse emollient of modern formulas: it softens skin, dissolves oil-soluble actives and absorbs without the greasy weight of a whole plant oil.
- Sunflower Seed Oil emollient
- Sunflower Seed Oil is high in linoleic acid, the fatty acid dry and blemish-prone skin is often short of. It is a light, non-fragrant emollient and one of the better tolerated plant oils.
- Jojoba Seed Oil emollient
- Jojoba Oil is a liquid wax rather than a true oil, and its structure is close to human sebum, which is why it absorbs so readily. It is an emollient that leaves a soft, non-greasy finish.
- Polyglyceryl-10 Behenate/Eicosadioate emulsifier
- A polyglycerin ester built from long chain fatty acids, used as a non-ionic emulsifier. It holds oil and water together and gives a formula a firm, waxy body.
- Caprylyl Glycol preservative booster
- Caprylyl Glycol is a glycol that conditions skin and, more importantly, strengthens a preservative system so less of the traditional preservative is needed. It appears in most modern formulas built without parabens.
- Ethylhexylglycerin preservative booster
- Ethylhexylglycerin softens skin and boosts a preservative system, which is why it is nearly always sitting beside phenoxyethanol or 1,2-hexanediol. It also cuts down the odour bacteria produce, so it turns up in deodorising products.
- Orange Peel Oil fragrance component
- Sweet Orange Peel Oil is a citrus essential oil carrying limonene. It scents a formula, and limonene is one of the components EU labelling names separately.
- Purified Water solvent
- Water is the base almost every serum, toner and cream is built on. It dissolves the water-loving ingredients and sets how light the finished texture feels. On an INCI list it is usually first, which only means it is the largest single ingredient by weight.
- Tocopherol antioxidant
- Tocopherol is vitamin E. It is an oil-soluble antioxidant that protects the oils in a formula from going rancid and works on skin as an emollient, and it is regularly paired with vitamin C because each keeps the other going for longer.
16 more explained
- 1,2-Hexanediol humectant
- 1,2-Hexanediol is a glycol used for two reasons: it holds water like glycerin, and it makes a formula harder for microbes to live in, so less traditional preservative is needed. Korean formulas use it heavily for that second reason.
- Ascorbic Acid antioxidant
- Ascorbic Acid is pure vitamin C, the most researched form and also the least stable: it needs a low pH and airtight packaging to stay active. It is an antioxidant used for the look of dullness and uneven tone.
- Hydroxypropyl Cyclodextrin solvent
- Hydroxypropyl Cyclodextrin is a ring-shaped sugar that traps an active molecule inside itself, keeping it stable and releasing it slowly. It is a delivery shell rather than an active.
- Glutathione antioxidant
- Glutathione is a small peptide the body uses as one of its main antioxidants. In skincare it is used as an antioxidant and for the look of dullness; it is unstable in water, so formulas that carry it are usually built around protecting it.
- Disodium EDTA chelator
- EDTA is a chelator: it locks up trace metal ions from water and packaging that would otherwise turn a formula cloudy, off-colour or rancid. It does nothing to skin and appears at a fraction of a percent.
- Niacinamide active
- Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. It is used at roughly 2 to 5 percent for the look of uneven tone and visible pores, and it is water soluble, stable and comfortable beside almost every other active, which is why it turns up in so many lists.
- Panthenol humectant
- Panthenol is pro-vitamin B5: skin converts it to pantothenic acid. It is a humectant that holds water and leaves skin feeling soft and less tight, and it is one of the ingredients formulators reach for when a formula also contains something harsh.
- Linoleic Acid fatty acid
- Linoleic Acid is an essential omega-6 fatty acid and the main fatty acid in sunflower, safflower and rosehip oil. In a formula it is a lipid that softens and sits in the outer layer.
- Biotin vitamin
- Biotin is vitamin B7. In skincare it is a conditioning vitamin, most often in hair and scalp formulas.
- Tocopheryl Acetate antioxidant
- Tocopheryl Acetate is a stable vitamin E ester that skin converts to tocopherol. It is used as an antioxidant and a light emollient and holds up better than plain vitamin E in a formula.
- Cyanocobalamin vitamin
- Cyanocobalamin is vitamin B12, and it is a deep pink-red, which is why a formula carrying it often has a colour nobody added on purpose. It is used as a conditioning vitamin.
- Limonene fragrance component
- Limonene is the citrus-peel aromatic. It appears here because EU labelling requires 26 fragrance components to be named individually rather than hidden inside "fragrance", and it is one of them.
- Linalool fragrance component
- Linalool is a floral aromatic found in lavender, bergamot and coriander. It is one of the 26 fragrance components EU labelling requires to be declared by name.
- Citral fragrance component
- Citral is a sharp lemon aromatic found in lemongrass and citrus oils. It is one of the 26 fragrance components EU labelling requires to be named.
- Geraniol fragrance component
- Geraniol is a rose-scented aromatic found in geranium and citronella oils. It is one of the 26 declarable fragrance components.
- Citronellol fragrance component
- Citronellol is a rose-geranium aromatic and one of the 26 fragrance components EU labelling names individually.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809652585062
- Made in
- Republic of Korea
- Volume
- 200 ml
- Category
- Cleanser
- Actives
- Glutathione, Niacinamide, Panthenol, Vitamin C
- Ships from
- California or Korea
Orders ship from California or direct from Korea with tracked delivery to your door, and both routes carry the same Korean-market release. Shipping is free on orders of $100 or more. Returns are accepted for 30 days, by mail.
We split shipments free, so one out-of-stock item never holds up the rest of your order.
Where this unit came from
- 1Seoul
Bought as Korean-market stock - 2Barcode
Listed against the Korean barcode on its box - 3California or Korea
Ships to you from either, as the same Korean-market release
We stock the version of a formula that is sold in Korea, not the release a brand prepares for another market under the same name. The barcode in the specification above is the Korean-market one and it is printed on the box you receive.
Every unit keeps its original barcode and batch code intact, so the unit in your hands can be checked against the brand’s own records.
Every order ships from California or direct from Korea, and returns run for 30 days.
Every claim on this page traces to the unit in the box, the barcode, the batch code and the price you can read for yourself.
How to use
- Use it as the routine step, AM and PM, worked into the wider routine, giving it a moment to settle before the next step.
Worth knowing
- Patch test on the inner arm first if trying a new brand's formula for the first time.
- Stop use and check the ingredient list against any known sensitivities before continuing.
Complete the routine
- This itemNumbuzin No.5 Glutathione C Facial Spa Cleanser 200ml$42.50

- Prep after cleansing, before the treatment stepnumbuzin No.3 Bifida Bakuchiol Exfoliating Toner Pads 190ml/70ea$40.00

- The treatment step of this routinenumbuzin No.3 Bifida Bakuchiol Zero Pore Serum 30ml$47.50

Total for 3 items$130.00
Reviews
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numbuzin No.5 Glutathione C Facial Spa Cleanser 200ml
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Numbuzin, Korean-market original
The Korean-market skincare formula built around Glycerin, from Numbuzin, sourced for the Korean market and reviewed before it ever reaches this page.
Verify your unit when it arrives
Verify your unit when it arrives
Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.
On the unit itself
- The Korean-market barcode, unaltered from the retail package.
- The manufacturer’s batch code, exactly as the maker printed it.
정품Genuine article, Korean-market stock
What professionals say
What professionals say
What skin-care professionals say about skin care, quoted from the medical sources linked beside each.
Your skin barrier is basically your outer layer of the skin.
Melissa Piliang, MDDermatologist, Cleveland Clinic Pretty much every step of a Korean skin care routine is going to have some component of hydration.
Alok Vij, MDDermatologist, Cleveland Clinic
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