MEDITHERAPY
Arbutin Skin Booster Serum 150ml
Arbutin Skin Booster Serum is a large-format brightening serum from MEDITHERAPY, built around Niacinamide at 10% alongside Arbutin and Alpha-Arbutin on its own ingredient list, sized for daily use across the face.
No reviews yet150 ml
$35.00 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- NormalCombinationDry
- Helps with
- A targeted treatment step between toner and moisturizerA concentrated step layered under a moisturizerDaily use as the treatment step of a routine
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
Arbutin Skin Booster Serum 150ml is a serum built on Adenosine, the wrinkle-care active recognized in Korea's own cosmetic functional-ingredient system, named 13 of 20 entries on MEDITHERAPY's own manufacturer INCI for this formula. Butylene Glycol runs alongside it, a humectant and solvent carrying the formula's actives, and the rest of the list rounds out a MEDITHERAPY formula built for this format rather than a stripped-down version of it. It takes after toner and before moisturizer, and the serum format is the reason it behaves the way it does once it is on skin. A serum in this format is built to carry a concentrated dose of its named actives in a light enough base that it absorbs before the next step goes on.
Key benefits
- Built on Adenosine, the wrinkle-care active recognized in Korea's own cosmetic functional-ingredient system
- Butylene Glycol runs alongside it, a humectant and solvent carrying the formula's actives
- No parfum or fragrance ingredient on the list
- 150ml serum sold in MEDITHERAPY's Korean-market packaging, not a US-reformulated version
- Takes after toner and before moisturizer
- 20 ingredients on the manufacturer's own list, in the order MEDITHERAPY lists them
How to use
- Apply to clean, toned skin, pressing in gently before the next step.
Is the Arbutin Skin Booster Serum 150ml sold here MEDITHERAPY's Korean-market formula?
Yes. What ships is MEDITHERAPY's release for the Korean market: the formula and packaging sold in Korea, with the Korean-market barcode and batch code intact on the box rather than swapped for an export or US-retail label.
Where does the Arbutin Skin Booster Serum 150ml go in a routine?
It takes after toner and before moisturizer. Use it exactly the way you would any serum at that point in a routine. A serum in this format is built to carry a concentrated dose of its named actives in a light enough base that it absorbs before the next step goes on, which is the reason this step order tends to hold across brands, not only for this one.
What does Adenosine do in this serum?
Adenosine is The wrinkle-care active recognized in Korea's own cosmetic functional-ingredient system. It appears at position 13 of 20 on MEDITHERAPY's own manufacturer ingredient list for this formula, which is real evidence of what the formula is built around rather than a marketing label placed over it.
Does the Arbutin Skin Booster Serum 150ml contain fragrance?
No. Parfum and fragrance do not appear anywhere on the manufacturer's own ingredient list for this formula, which is one reason it reads as a shorter, calmer list than a heavily scented formula in the same category.
How does buying the Arbutin Skin Booster Serum 150ml here compare with a US retailer carrying the same name?
A US listing under the same product name can be a reformulated export version and rarely states which one it is selling. What we carry is the Korean-market MEDITHERAPY release, identified by its intact Korean barcode and batch code on the box rather than a relabeled export carton, so the unit you get matches what is sold on shelf in Korea.
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 (19): Aqua (Water), Niacinamide (10%), Butylene Glycol, Glycerin, Arbutin (2%), 1,2-Hexanediol, Caprylic/Capric Triglyceride, Hydroxyacetophenone, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Arginine, Ethylhexylglycerin, Adenosine, Xanthan Gum, Disodium EDTA, Ceratonia Siliqua (Carob) Gum, Rosa Canina Fruit Oil, Tocopheryl Acetate, Sucrose, Alpha-Arbutin (1ppm)
Ingredient list read from jolse.com on 10 September 2026.
19 of 19 explained
- Aqua (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.
- Niacinamide (10%) 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.
- 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.
- 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.
- Arbutin (2%) active
- Arbutin is the naturally occurring form of the same compound, from bearberry and related plants, used for the look of uneven tone. The alpha isomer is the more stable of the two.
- 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.
- 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.
- Hydroxyacetophenone preservative booster
- Hydroxyacetophenone is an antioxidant that also strengthens a preservative system, so a formula needs less traditional preservative. Korean formulas pair it with 1,2-hexanediol constantly.
- Acrylates/C10-30 Alkyl Acrylate Crosspolymer thickener
- This is a carbomer relative with fatty side chains, so it thickens and stabilises an emulsion at the same time. It gives a light gel-cream body rather than a heavy one.
- Arginine amino acid
- Arginine is an amino acid that does two jobs here: it holds water in the outer layer of skin, and it neutralises acidic gelling agents, which is why it often stands in for a synthetic pH adjuster.
- 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.
- Adenosine active
- Adenosine is a nucleoside that Korea's own cosmetic authority recognises as a wrinkle-care functional ingredient, which is why it appears on so many Korean lists at a low level. It is used for the look of fine lines and is stable and well tolerated.
7 more explained
- Xanthan Gum thickener
- Xanthan Gum is a polysaccharide made by fermenting sugar. It thickens a watery formula into a gel and holds the whole thing in suspension so nothing separates. Too much of it and a serum turns stringy, which is why it appears in fractions of a percent.
- 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.
- Ceratonia Siliqua (Carob) Gum thickener
- Carob Gum is a seed polysaccharide from the carob tree. It thickens a formula and gives a soft, cushioned body.
- Rosa Canina Fruit Oil emollient
- Rosehip oil, pressed from the fruit of the dog rose. It is high in linoleic acid and carotenoids and is used for the look of marked, uneven skin.
- 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.
- Sucrose humectant
- Sucrose is table sugar, used here as a humectant. It draws water into the outer layer of skin and, in a scrub, doubles as the physical grain.
- Alpha-Arbutin (1ppm) active
- Alpha-Arbutin is a plant-derived compound, related to the sugar-bound form found in bearberry, used for the look of dark spots and uneven tone. It is stable in water and works at skin-friendly pH.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809606776850
- Made in
- Republic of Korea
- Volume
- 150 ml
- Category
- Serum & Ampoule
- Actives
- Adenosine, Arbutin, Niacinamide
- 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 on the inner arm first, as with any new step added to a routine.
- Discontinue if irritation develops and check the ingredient list against any known sensitivity.
Complete the routine
- This itemMEDITHERAPY Arbutin Skin Booster Serum 150ml$52.50

- From the same Korean-market lineMEDITHERAPY SOKSAL GUA SHA$75.00

- An as-needed step, in place of the prep layerMEDITHERAPY Blue Layer Water Dome Mask 34g X 4ea$45.00

Total for 3 items$172.50
Reviews
No reviews yet. Tell us how much you love the product!
Write a reviewWrite a review
MEDITHERAPY Arbutin Skin Booster Serum 150ml
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
We’re on gram!
Creators trying on authentic Korean skincare routines and products from us.
Rating a shelf of Dr. Althea products one by one.
Jasmine Loo · YouTube
Two hydrating serums side by side, IUNIK and Dr. Althea.
Kristin · YouTube
A walk through the Dr. Althea serum lineup and who each one suits.
auraofmahmuda · YouTube
A blunt first take on the Dr. Althea range.
Lexi Chang · YouTube
A first look at the viral 345 Relief Cream before buying.
Shelley Nayak · YouTube
A first try of the Dr. Althea serum on camera.
Hannah Ziad · YouTube
MEDITHERAPY, Korean-market original
Serum built on Adenosine, 150ml.
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
Ask an AI assistant about this product
Ask an AI assistant about this product
Opens ChatGPT, Perplexity or Claude in a new tab with the question prefilled. Claude asks you to sign in first.






