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Doopi Lab Cool Salt Long-lasting Cooling Tonic 100ml
Soybean seed extract and sea water open this scalp tonic's own list, with L-menthol tenth, salicylic acid, dexpanthenol, biotin and hydrolyzed keratin behind them: the Korean-market 100 ml spray for an oily, overheated scalp.
No reviews yet100 ml
$20.00 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- Congested skinUneven textureDehydrated skinSensitive skin
- Helps with
- Shoppers looking for Menthol in a tonerRoutines that want Menthol and Menthyl Lactate in one stepFilling the toner step with a Korean-market formula
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
The Doopi Lab Cool Salt Long-lasting Cooling Tonic is a 100ml toner, used straight after cleansing, morning and evening, while the face is still damp. The active it is built around is Menthol, named tenth on its own ingredient list. The same list carries Menthyl Lactate, Methyl Diisopropyl Propionamide and Madecassoside, so the active is not the only thing on it worth naming. How much of the Menthol stays on the skin, and for how long, is decided by the toner format rather than by the list alone. Dr.G sells this Menthol toner in Korea, and this is that version.
Key benefits
- Menthol, the active this toner is built around
- Menthyl Lactate, Methyl Diisopropyl Propionamide and Madecassoside on the same list, actives
- Salicylic Acid on the same list, an exfoliant
- Tartaric Acid and Biotin further down the same list
- Tocopherol and Glycoproteins further down the same list
- Menthol named tenth on the manufacturer list printed on this page
How to use
- Apply directly to the scalp after shampooing, section by section, and massage in; leave in rather than rinsing.
Where does this toner go in my routine?
Straight after cleansing, morning and evening, while the face is still damp. Anything thinner than a toner goes on before it, and anything richer goes on after. If you are adding it to a routine you already like, give it a week on its own first, so what you see is the Menthol and not three changes at once.
What else is on the list besides Menthol?
Menthyl Lactate, Methyl Diisopropyl Propionamide and Madecassoside. The order they are printed in on this toner's panel is the order on the box, so you can see where Menthol sits relative to them. Further down the same panel: Salicylic Acid, Tartaric Acid and Biotin.
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 (44): Glycine Max (Soybean) Seed Extract, Sea Water, 1,2-Hexanediol, Methylpropanediol, C12-13 Pareth-9, Sodium Chloride, Water, Polyglyceryl-10 Oleate, Caprylyl/Capryl Glucoside, L-Menthol, Polyglyceryl-10 Laurate, Salicylic Acid, Tromethamine, Polyglyceryl-10 Myristate, Menthyl Lactate, Dexpanthenol, Citric Acid, Clay Extract, Enteromorpha Compressa Extract, Sodium Citrate, Salicornia Herbacea Extract, Spirulina Platensis Extract, Sodium Phytate, Propylene Glycol, Polyquaternium-51, Glyceryl Caprylate, Tartaric Acid, Hydroxypropylcellulose, Centella Asiatica Extract, Ethyl Menthane Carboxamide, Methyl Diisopropyl Propionamide, Tocopherol, Caprylyl Glycol, Ethylhexylglycerin, Phenethyl Alcohol, Oryza Sativa (Rice) Bran Oil, Biotin, Maltodextrin, Centella Asiatica Oil, Glycoproteins, Hydrolyzed Keratin, Madecassoside, Caesalpinia Spinosa Fruit Extract, Helianthus Annuus (Sunflower) Sprout Extract
Ingredient list read from inkeedecoder.com on 10 September 2026.
39 of 44 explained
- Glycine Max (Soybean) Seed Extract plant extract
- Soybean Seed Extract carries isoflavones, plant sterols and soy proteins. It is used as a conditioning antioxidant extract.
- Sea Water mineral
- Sea Water is filtered and desalinated seawater used in place of plain water. It carries magnesium, calcium and potassium, so it brings the mineral balance of the base closer to skin's own.
- 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.
- 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.
- C12-13 Pareth-9 surfactant
- An ethoxylated fatty alcohol used as a mild surfactant and solubiliser, most often so an oil-based makeup remover will rinse away with water.
- 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.
- 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.
- Polyglyceryl-10 Oleate emulsifier
- Polyglyceryl-10 Oleate is a mild sugar-derived emulsifier and solubiliser used where a formula must stay clear.
- Caprylyl/Capryl Glucoside surfactant
- Caprylyl/Capryl Glucoside is a sugar-derived cleansing surfactant. It foams modestly and is mild enough for low-pH cleansers built for reactive skin.
- Polyglyceryl-10 Laurate emulsifier
- Polyglyceryl-10 Laurate is a sugar-derived emulsifier and solubiliser, mild enough to be a standard choice in Korean essences. It dissolves small amounts of oil into water without any tightening feel.
- Salicylic Acid exfoliant
- Salicylic Acid is a BHA, and the only common exfoliant that is oil soluble, so it can work inside a pore rather than only on the surface. It loosens the dead cells that block pores and is used for the look of congested, oily skin.
- Tromethamine pH adjuster
- Tromethamine neutralises acidic thickeners such as carbomer so they gel, and holds a formula near skin-friendly pH. It is used at a fraction of a percent.
27 more explained
- Polyglyceryl-10 Myristate emulsifier
- Polyglyceryl-10 Myristate is a mild sugar-derived emulsifier used to keep oil dispersed in a watery formula.
- Menthyl Lactate active
- Menthyl Lactate is a menthol derivative that gives a cooling sensation without menthol's sharpness or scent. It is a sensory ingredient rather than an active.
- Dexpanthenol 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.
- 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.
- Enteromorpha Compressa Extract plant extract
- Green laver, the parae of Korean cooking. Its extract is a mineral-rich, hydrating seaweed ingredient.
- 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.
- Salicornia Herbacea Extract plant extract
- Glasswort, the hamcho that grows on Korean tidal flats. It concentrates sea minerals as it grows, so its extract is used as a mineral-rich hydrating ingredient.
- Spirulina Platensis Extract plant extract
- Spirulina is a blue-green microalga, unusually high in protein. Its extract carries amino acids and the blue pigment phycocyanin, which can tint a formula.
- 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.
- Propylene Glycol humectant
- Propylene Glycol is a small glycol used as a humectant and solvent. It hydrates and helps actives dissolve; newer formulas often swap it for propanediol, which does the same job with a lighter feel.
- Polyquaternium-51 film former
- Polyquaternium-51 is a polymer, sometimes sold as Lipidure, built on the same phosphorylcholine structure as a cell membrane. It holds water in a film on the surface and gives a distinctive soft, dry finish.
- 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.
- Tartaric Acid exfoliant
- Tartaric Acid is the fruit acid of grapes and tamarind. It is an AHA, but it is used more often to adjust pH and bind metal ions than as the main exfoliant.
- Centella Asiatica Extract plant extract
- Centella Asiatica is the plant behind the whole cica category, sold as gotu kola or Madagascar centella. Its extract is the anchor of Korean formulas built for easily reddened skin, and its work is done by four triterpenes: asiaticoside, madecassoside, asiatic acid and madecassic acid.
- 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.
- 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.
- 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.
- Phenethyl Alcohol preservative booster
- Phenethyl Alcohol is an aromatic alcohol with a faint rose scent. It works as a preservative booster and a light solvent, and it is common in formulas built without traditional preservatives.
- Oryza Sativa (Rice) Bran Oil emollient
- Rice Bran Oil is pressed from the bran left over from milling rice. It carries vitamin E and a group of rice-specific antioxidants, and it is a light emollient.
- Biotin vitamin
- Biotin is vitamin B7. In skincare it is a conditioning vitamin, most often in hair and scalp formulas.
- Maltodextrin film former
- Maltodextrin is a starch-derived sugar chain used to carry powdered extracts and to form a light film. It also gives a soft, smoothing feel.
- Centella Asiatica Oil plant extract
- The oil-soluble fraction of centella, carried in a plant oil. It brings the fat-soluble part of the plant that a water extract leaves behind.
- Glycoproteins protein
- Glycoproteins are proteins carrying sugar chains, usually supplied by a ferment. They hold water and leave a conditioning film.
- Hydrolyzed Keratin protein
- Hydrolyzed Keratin is keratin, the protein hair and nails are built from, cut into fragments small enough to dissolve. In a formula it is a humectant and a smoothing film former.
- Madecassoside active
- Madecassoside is the centella triterpene most associated with the look of redness, and the one brands lead with in cica products. It is water soluble and stable, so it appears in essences as readily as in creams.
- Caesalpinia Spinosa Fruit Extract plant extract
- Tara fruit extract, from a Peruvian pod. The pod is high in tannins and in the galactomannan sugar sold as tara gum, so the extract also adds a little body.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809838658078
- Made in
- Republic of Korea
- Volume
- 100 ml
- Category
- Hair
- Actives
- Centella Asiatica, Madecassoside, Rice Extract, Salicylic Acid
- 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.
Inside the formula
Inside the formula
Worth knowing
- Patch test this toner on a small area and wait a day before using it more widely, especially with Menthol on the list.
- Citric Acid and Salicylic Acid on this list makes this toner an exfoliating step, so do not stack it with another one on the same night.
Complete the routine
- This itemDr.G Doopi Lab Cool Salt Long-lasting Cooling Tonic 100ml$20.00

- Seal the routine in as the last stepDr.G Red Blemish Clear Soothing Cream 50ml$27.50

- The last step of the morning, over everything elseDr.G Green Mild Up Sun Plus SPF50+/PA++++ 50ml$30.00

Total for 3 items$77.50
Reviews
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Dr.G Doopi Lab Cool Salt Long-lasting Cooling Tonic 100ml
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
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Dr.G, Korean-market original
The Original Korean Formula toner from Dr.G, 100ml formulated with Menthol and Menthyl Lactate, shipped from California or direct from 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.
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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