MEDIHEAL Vitamin C Brightening Serum 40ml
MEDIHEAL Vitamin C Brightening Serum 40ml is a serum that names 3-O- Ethyl Ascorbic Acid on its own ingredient panel, sourced as the Korean-market formula.
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- Duties prepaid
- Suited to
- Sensitive skinNormal skinDry skin
- Helps with
- A formula built around BetaineA treatment serum stepA layered Korean routine
In stock. Ships from our California warehouse, dispatched within 2 business days
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- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
3-O- Ethyl Ascorbic Acid is named on the ingredient panel on this serum. 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. On this panel it sits alongside Niacinamide, Melia Azadirachta Flower Extract and Ocimum Sanctum Leaf Extract. 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.
Key benefits
- 3-O- Ethyl Ascorbic Acid named on this product's own ingredient panel
- Niacinamide on the same panel, the formula's active
- Melia Azadirachta Flower Extract on the same panel, the formula's plant extract
- 40 ml to a unit
- Korean GS1 barcode matched against a Korea sourcing supplier's record for this item
Key actives
3-O- Ethyl Ascorbic Acid
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.
Ascorbic Acid
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.
Niacinamide
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.
Melia Azadirachta Flower Extract
Melia Azadirachta is neem. Its leaf and flower extracts are long-standing Ayurvedic ingredients, and Korean formulas use them in products aimed at the look of congested, blemish-prone skin.
Ocimum Sanctum Leaf Extract
Ocimum Sanctum is holy basil, or tulsi. Its leaf extract carries plant antioxidants and is used in formulas built for the look of stressed, reactive skin.
What does Betaine do in this serum?
Betaine sits within the first ten ingredients, a humectant and comfort ingredient common across Korean bases.
Is Niacinamide also in this formula?
Niacinamide sits within the first ten ingredients, the tone-evening, barrier-supporting active Korean formulas lean on most often, and its early position here means it is not a token dose. It sits alongside Betaine on MEDIHEAL's ingredient list for this product.
How is this serum used in a routine?
Apply a few drops to cleansed skin and pat in gently before moisturiser. It works as a treatment step layered under moisturiser.
Who is this serum suited for?
Sensitive skin, Normal skin are the best fit for this serum. Patch test on the inner arm before first full use, as with any new skincare product.
- Ships from
- California
Duties are prepaid. Nothing is owed at delivery. Returns are accepted for 30 days, by mail.
Orders ship from our California warehouse, dispatched within 2 business days, and arrive in 3 to 5 days. Shipping is free on orders of $100 or more.
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 - 2Customs
Duty paid by us before it enters the US - 3California
Ships domestically, no international leg
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.
Import duties are paid by us before the parcel reaches you, so nothing is owed at the door, 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.
Payment and security
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How to use
- Apply after toner on barely damp skin, pressing three or four drops across the face.
- Wait a minute before your moisturiser so the two layers do not roll together.
- Always finish a morning routine that includes this with sunscreen as the last step.
- Do not stack it with an exfoliating acid in the same routine while either is still new to you.
Worth knowing
- Patch test on the inner arm before first full use, as with any new skincare product.
- Introduce a new active gradually into an existing routine rather than adding several at once.
Reviews
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Korean-market original
MEDIHEAL's Vitamin C Brightening Serum 40ml, sourced for the Korean market.
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.
Match the batch code on the box against the code printed on the bottle or tube itself; the two are stamped separately and should agree.
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 Niacinamide helps reduce the appearance of pores in a few ways. By strengthening the skin barrier and improving elasticity, pores appear less noticeable and more even.
Ashlyn YankeAesthetician, Cleveland Clinic
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