Dr.Althea Vitamin C Boosting Serum 30ml
Dr.Althea's Vitamin C Boosting Serum pairs 3-O-Ethyl Ascorbic Acid with straight Ascorbic Acid and niacinamide, worn in the morning after toner and before moisturizer and sunscreen.
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- Suited to
- Dehydrated skinSensitive skinDull, uneven tone
- Helps with
- Shoppers looking for 3-O-Ethyl Ascorbic Acid in a serumRoutines that want 3-O-Ethyl Ascorbic Acid and Niacinamide in one stepFilling the serum step with a Korean-market formulaAnyone who wants the 3-O-Ethyl Ascorbic Acid serum sold on Korean shelves
In stock. Ships from our California warehouse, dispatched within 2 business days
You’re $100.00 away from free US shipping.
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- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
Key benefits
- 3-O-Ethyl Ascorbic Acid, the antioxidant this serum is built around
- Niacinamide, Dipotassium Glycyrrhizate, Adenosine and Allantoin on the same list, actives
- Niacin and Pantothenic Acid further down the same list
- Thiamine HCl and Riboflavin further down the same list
- 3-O-Ethyl Ascorbic Acid named third on the manufacturer list printed on this page
- The Korean-market release of this serum, confirmed against its Korean barcode
Key actives
3-O-Ethyl Ascorbic Acidantioxidant
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. The name on the box points at it, and it is named third on this serum's own ingredient list.
Niacinamideactive
Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. The panel names it sixteenth on this serum's list, beside 3-O-Ethyl Ascorbic Acid.
Dipotassium Glycyrrhizateactive
Dipotassium Glycyrrhizate is a water-soluble salt derived from licorice root. It is named thirtieth on this serum's list, alongside 3-O-Ethyl Ascorbic Acid.
Adenosineactive
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. It is named thirty-sixth on this serum's list, alongside 3-O-Ethyl Ascorbic Acid.
Allantoinactive
Allantoin is a comfrey-derived compound used to condition skin and soften the outer layer so it feels smoother. It is one of the standard additions to a formula built for easily irritated skin. The panel names it forty-sixth on this serum's list, beside 3-O-Ethyl Ascorbic Acid.
How to use
- Use it after toner or essence and before a moisturizer, applying two to three drops and patting in until absorbed. AM and/or PM, pairing with a sunscreen the following morning.
Where does this serum go in my routine?
After toner and before moisturizer, morning and evening. Anything thinner than a serum 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 3-O-Ethyl Ascorbic Acid and not three changes at once.
Is this the Korean-market serum or a US version?
The Korean-market one, 3-O-Ethyl Ascorbic Acid and all. We match this serum to its Korean barcode before it reaches the shelf, which is the check that tells you which market release you are holding.
Does this serum contain fragrance?
Yes. The ingredient list names Limonene. It sits on the panel printed on this page, so you can read the position for yourself before you buy. If fragrance components are something you avoid, this serum is not the one.
What else is on the list besides 3-O-Ethyl Ascorbic Acid?
Niacinamide, Dipotassium Glycyrrhizate and Adenosine. The order they are printed in on this serum's panel is the order on the box, so you can see where 3-O-Ethyl Ascorbic Acid sits relative to them. Further down the same panel: Allantoin, Niacin and Pantothenic Acid.
- 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 it works
The Vitamin C Boosting Serum is a 30ml serum, used after toner and before moisturizer, morning and evening. The antioxidant it is built around is 3-O-Ethyl Ascorbic Acid, named third on its own ingredient list. The same list carries Niacinamide, Dipotassium Glycyrrhizate and Adenosine, so the antioxidant is not the only thing on it worth naming. How much of the 3-O-Ethyl Ascorbic Acid stays on the skin, and for how long, is decided by the serum format rather than by the list alone. This is the Original Korean Formula, the serum Dr.Althea sells in Korea, 3-O-Ethyl Ascorbic Acid and all.
Worth knowing
- Patch test this serum on a small area and wait a day before using it more widely, especially with 3-O-Ethyl Ascorbic Acid on the list.
- This list names Limonene, so skip it if fragrance components are something you avoid.
Reviews
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Korean-market original
Dr.Althea's Dr.Althea Vitamin C Boosting Serum is built around 3-O-Ethyl Ascorbic Acid, in the 30ml bottle it ships in 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.
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 It contains liquiritin, an active compound that helps to disperse and remove existing melanin in the skin.
Jennifer Chwalek, MDDermatologist, Byrdie
1 more professional perspective
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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