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Snail Sleeping Hair Ampoule 20ml$7.50Soycidil Shampoo
Medicube Soycidil Shampoo is a Korean-market shampoo built around Melaleuca Alternifolia (Tea Tree) Extract, formulated in Korea and sold here in its original Korean-market formula rather than a US-shelf reformulation.
No reviews yet$22.99
490ml
$4.69 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- a normal scalpan oily scalpa dry, flaking scalp
- Helps with
- scalp itchiness or buildupfine or thinning-feeling haira scalp that gets oily between washes
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Key benefits
- Built around Melaleuca Alternifolia (Tea Tree) Extract, positioned for clarity.
- Built around Ascorbic Acid, positioned for brightening.
- Built around 3-O-Ethyl Ascorbic Acid, positioned for brightening.
- Formulated as a shampoo for the cleansing step of a hair-care routine.
- The Korean-market Medicube formula for Soycidil Shampoo, matching what Medicube sells in Korea rather than a US-reformulated line.
Key actives
13Melaleuca Alternifolia (Tea Tree) ExtractClarity
Melaleuca Alternifolia (Tea Tree) Extract sits in the middle stretch of the ingredient list, a supporting rather than a headline role. It is an ingredient chosen for clarity: a botanical long used in blemish-prone routines for its fresh, clean feel on the skin's surface.
All products with Melaleuca Alternifolia (Tea Tree) Leaf Extract
36Ascorbic AcidBrightening
Ascorbic Acid sits further down the ingredient list, in a supporting, lower-weighted role. It is an ingredient chosen for brightening: the pure, most active form of vitamin C, included for its brightening reputation though it is also the least stable form, so this formula is best kept away from heat and light.
38PanthenolComfort
Panthenol sits further down the ingredient list, in a supporting, lower-weighted role. It is an ingredient chosen for comfort: provitamin B5, a humectant and comfort ingredient that softens the finish and helps a formula feel less drying over repeated use.
41Copper Tripeptide-1Firming look
Copper Tripeptide-1 sits further down the ingredient list, in a supporting, lower-weighted role. It is an ingredient chosen for firming look: a signal peptide included for its reputation supporting the look of firmer, more resilient skin over consistent use.
3-O-Ethyl Ascorbic AcidBrightening
3-O-Ethyl Ascorbic Acid sits further down the ingredient list, in a supporting, lower-weighted role. It is an ingredient chosen for brightening: a stable vitamin C derivative chosen so the brightening benefit holds up over the product's shelf life better than pure ascorbic acid would.
Inside the formula
Inside the formula
44
Ingredients declared
#6
Fragrance on the list
13Melaleuca Alternifolia36Ascorbic Acid41Copper Tripeptide-1
- 13Melaleuca Alternifolia
- 36Ascorbic Acid
- 41Copper Tripeptide-1
Where each key active sits on the declared ingredient list, by entry number. Position is proportion: the further forward, the larger its share.
Medicube Soycidil Shampoo
What does the Soycidil Shampoo actually contain?
Its ingredient list is led by Melaleuca Alternifolia (Tea Tree) Extract, with the rest of the formula built to support that active rather than compete with it. We list the ingredients in the order the manufacturer prints them, so the ones near the top of the panel are doing the most work in the formula.
How do I use the Soycidil Shampoo?
Use this shampoo as the cleansing step of a hair-care routine. To apply, work a coin-sized amount into wet hair and scalp, lather, and rinse thoroughly. Keep it to as often as the scalp needs washing unless the packaging states otherwise, and give the rest of the routine a moment to settle before layering the next step. Give it a full bottle or box before judging the result, since most Korean routines are built for steady use rather than a single application.
Is the Soycidil Shampoo the same formula sold in Korea, or a US version?
This Soycidil Shampoo is the Korean-market formula, not a version reformulated for US shelves. It arrives with its original Korean-market barcode and batch code intact so the formula can be checked against the box on arrival.
Can I use the Soycidil Shampoo with other actives in my routine?
Yes, as long as it is used in its own step, the cleansing step of a hair-care routine, and not layered on top of a product doing the same job. Introduce any new step gradually over the first week or two and keep an eye on how the skin responds before adding a second new active alongside it.
Who is the Soycidil Shampoo suited for?
It suits most skin types looking for cleansing step of hair-care routine rather than a single acute problem. It comes in a 490ml format. Anyone with a known sensitivity to a specific ingredient should check the full ingredient panel on this page before buying.
Contains fragrance (parfum)
Not on the ingredient list below: denatured or SD alcohol, essential oils, silicones, parabens, sulfate surfactants, mineral oil or petrolatum and added color.
Full INCI (44): Water, Sodium C14-16 Olefin Sulfonate, Disodium Laureth Sulfosuccinate, Sodium Lauroyl Lactylate, Coco-Betaine, Fragrance (Parfum), Lauryl Hydroxysultaine, Butylene Glycol, Glycine Soja (Soybean) Germ Extract, Oryza Sativa (Rice) Extract, Sea Salt, Aspergillus Ferment, Melaleuca Alternifolia (Tea Tree) Extract, Sodium Cocoyl Isethionate, Glycerin, Lauramide Mipa, Caprylyl Glycol, C12-14 Alketh -12, Sodium Cocoyl Alaninate, Sodium Chloride, Glyceryl Caprylate, Citric Acid, Hexylene Glycol, Polyquaternium-10, Trihydroxystearin, Caprylic/Capric Triglyceride, Polyquaternium -22, Ethylhexylglycerin, Sodium Citrate, Diethoxyethyl Succinate, Sodium Phytate, Pentylene Glycol, Methyl Diisopropyl Propionamide, 1,2-Hexanediol, Tocopherol, 3-O-Ethyl Ascorbic Acid, Biotin, Panthenol, Hydroxypropyl Cyclodextrin, Methylpropanediol, Copper Tripeptide-1, Octanediol, 7-Dehydrocholesterol, Cetearyl Alcohol
Ingredient list read from incidecoder.com on 30 August 2026.
41 of 44 explained
- 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.
- Sodium C14-16 Olefin Sulfonate surfactant
- A strong anionic surfactant that foams heavily. It is a sulfate alternative in name but not in strength, and it is more common in shampoos than in facial cleansers.
- Disodium Laureth Sulfosuccinate surfactant
- A sulfosuccinate surfactant: milder than a sulfate, with more foam than an amino-acid one. It is often used to soften a sulfate-based cleanser.
- Coco-Betaine surfactant
- Coco-Betaine is a coconut-derived secondary surfactant used to build foam and make a cleanser milder.
- Fragrance (Parfum) fragrance
- Fragrance, or Parfum, is a single declaration standing for a whole scent blend, which can be dozens of materials. Regulators allow it as a trade secret, so a list showing only this word does not say what the scent is made of. It is the most common trigger named by people with reactive skin.
- Lauryl Hydroxysultaine surfactant
- Lauryl Hydroxysultaine is a mild secondary surfactant that keeps foaming even in hard water and at low pH.
- Butylene Glycol humectant
- Butylene Glycol is a small glycol that does two jobs at once: it holds water in the top layer of skin and it dissolves plant extracts and actives that plain water cannot. It also thins a formula, which is why watery Korean essences lean on it.
- Glycine Soja (Soybean) Germ Extract plant extract
- Soybean germ extract, from the embryo of the bean. It carries isoflavones and peptides and is used as a conditioning extract.
- Oryza Sativa (Rice) Extract plant extract
- Rice Extract is the anchor of the Korean rice-skincare category. It carries starches, amino acids and ferulic acid, and it is used for the look of dullness and for a soft, blurred finish.
- Sea Salt mineral
- Sea Salt is the mineral residue of evaporated seawater: mostly sodium chloride with magnesium, calcium and potassium. It is used as a mild abrasive in scrubs and to adjust how thick a cleanser is.
- Aspergillus Ferment ferment
- Aspergillus Ferment is a mould ferment, from the same organism family used to make soy sauce and sake. It supplies amino acids and organic acids and is used as a conditioning ferment.
- Melaleuca Alternifolia (Tea Tree) Extract plant extract
- Tea Tree Leaf Extract is the water-based extract rather than the essential oil, so it is far milder and much less aromatic. It is used in formulas for blemish-prone skin.
29 more explained
- Sodium Cocoyl Isethionate surfactant
- Sodium Cocoyl Isethionate is a coconut-derived surfactant that gives a dense, creamy foam while staying mild. It is the usual choice in syndet cleansing bars.
- 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.
- 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.
- C12-14 Alketh -12 emulsifier
- C12-14 Alketh-12 is a solubiliser used to keep oils and fragrance dissolved in a water-based formula.
- Sodium Cocoyl Alaninate surfactant
- An amino-acid surfactant made from coconut fatty acids and alanine. It foams less aggressively than a sulfate and rinses without the tight feeling.
- Sodium Chloride thickener
- Sodium Chloride is salt. In a cleanser it thickens the liquid; in a mask or essence it balances the mineral content of the water phase. It has no active role.
- Glyceryl Caprylate emulsifier
- Glyceryl Caprylate is a mild emulsifier that also makes a formula less hospitable to microbes, so it is often part of a preservative-free system.
- Citric Acid pH adjuster
- Citric Acid is used in tiny amounts to bring a formula to the pH its actives need, not as an exfoliant at that level. It is an AHA, so at much higher concentrations it can also exfoliate.
- Hexylene Glycol solvent
- Hexylene Glycol is a solvent and light humectant. It keeps ingredients that resist water in solution and thins a formula so it spreads evenly.
- Polyquaternium-10 film former
- A cellulose polymer carrying a positive charge. It deposits from a rinse-off formula onto hair or skin and leaves a smooth, anti-static film.
- Trihydroxystearin thickener
- A castor-derived wax used to thicken oils and stop pigments settling. It builds structure in an anhydrous formula without making it hard.
- 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.
- 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.
- Sodium Citrate pH adjuster
- Sodium Citrate is the salt of citric acid, used as a buffer: it holds a formula at a steady pH rather than pushing it in one direction. It is also a mild chelator.
- Diethoxyethyl Succinate solvent
- Diethoxyethyl Succinate is a solvent that helps water-resistant actives spread and sink in evenly. It also leaves a light, silky feel.
- Sodium Phytate chelator
- Sodium Phytate is a rice-derived chelator used in place of EDTA. It ties up trace metals so the formula stays stable and its colour and scent hold.
- Pentylene Glycol humectant
- Pentylene Glycol hydrates and, like the other longer-chain glycols, makes a formula less hospitable to microbes so the preservative system can be lighter. It also improves how evenly a product spreads.
- Methyl Diisopropyl Propionamide active
- A synthetic cooling agent that gives the cool feeling of menthol without the mint smell. It is used where a formula wants the sensation but not the scent.
- 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.
- 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.
- 3-O-Ethyl Ascorbic Acid antioxidant
- 3-O-Ethyl Ascorbic Acid is a stable vitamin C derivative that skin converts to ascorbic acid. It survives in a formula far better than pure vitamin C and works at a gentler pH, so it suits skin that finds the pure acid uncomfortable.
- Biotin vitamin
- Biotin is vitamin B7. In skincare it is a conditioning vitamin, most often in hair and scalp formulas.
- 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.
- 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.
- Methylpropanediol humectant
- Methylpropanediol is a small glycol used to hydrate and to help water-soluble actives penetrate the outer layer of skin more evenly. It leaves almost no tack, which suits watery textures.
- Copper Tripeptide-1 peptide
- Copper Tripeptide-1 is three amino acids bound to a copper ion, and the classic firming peptide in cosmetic chemistry. It is blue in solution, which is often why a serum carrying it is tinted, and it is used for the look of firmness and fine lines.
- Octanediol preservative booster
- A glycol that hydrates and, like the other longer-chain glycols, makes a formula less hospitable to microbes so the preservative system can be lighter.
- 7-Dehydrocholesterol barrier lipid
- 7-Dehydrocholesterol is the sterol skin holds as the precursor to vitamin D. In a formula it behaves as a barrier lipid, closely related to cholesterol.
- Cetearyl Alcohol fatty alcohol
- Cetearyl Alcohol is a waxy solid, not the drying kind of alcohol. It is a blend of cetyl and stearyl alcohols used to thicken a cream and keep oil and water from separating, and it softens skin as it does so.
- Market
- Korean market, the version sold in Korea
- Made in
- Republic of Korea
- Volume
- 490ml
- Category
- Hair
- Actives
- Panthenol, Peptides, Rice Extract, Tea Tree, 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.
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 it works
Medicube Soycidil Shampoo is a shampoo built for the cleansing step of a hair-care routine. Its ingredient list leads with Melaleuca Alternifolia (Tea Tree) Extract, Ascorbic Acid, and 3-O-Ethyl Ascorbic Acid, so the formula's stated purpose lines up with what actually sits near the top of that list rather than with a single marketing ingredient buried further down. Melaleuca Alternifolia (Tea Tree) Extract does the most work here as a clarity, and the remaining actives round out the texture and finish rather than compete for attention. Placed as the cleansing step of a hair-care routine, it is meant to be used as often as the scalp needs washing rather than swapped freely between steps. Because this is the Korean-market version of the Soycidil Shampoo line rather than a US-reformulated variant, the texture and finish match what Medicube sells through Korean retail.
How to use
- Use it on wet hair, working the lather into the scalp with the fingertips rather than piling it onto the lengths.
- One wash is usually enough. A second is for days with product or oil built up at the roots.
- Rinse until the water runs clear, then condition the lengths only.
- As often as you wash your hair. Do not scrub with your nails, because the scalp is skin and it scratches.
Worth knowing
- Patch test on the inner arm before the first full-face application, especially on skin that reacts easily to new products.
- Stop use and rinse off if stinging, burning, or new redness shows up rather than pushing through discomfort.
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Medicube Soycidil Shampoo
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
Medicube, Korean-market original
Medicube's Korean-market shampoo led by Melaleuca Alternifolia (Tea Tree) Extract, the same formula sold in Korea.
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.
Medicube prints a QR code on the inner box. Scan it with your phone camera and it resolves to the brand’s own verification site.
Verify on medicubeverify.com →Source: Medicube packaging and verification site
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 the key actives in this formula, quoted from the medical sources linked beside each.
Using topical vitamin C can result in less cell damage and better-looking skin.
Melissa Piliang, MDDermatologist, Cleveland Clinic Pantothenol is a common ingredient in skin care and hair products I recommend, particularly for people who are prone to dryness.
Taylor Bullock, MDDermatology resident, Cleveland Clinic
1 more professional perspective
I think it's fair to say I've seen lots of patients use tea tree oil for a variety of skin issues. It's a natural remedy that is known to help.
Simon Hodes, MB ChBFamily physician, Cleveland Clinic
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