Medicube
Age-R Glutathione Glow Serum
Medicube Age-R Glutathione Glow Serum is a Korean-market serum built around Niacinamide, formulated in Korea and sold here in its original Korean-market formula rather than a US-shelf reformulation.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- normal skincombination skindry skin
- Helps with
- uneven tone and dullnessgeneral day-to-day maintenance as part of a full routinea routine that wants a Korean-market step in this category
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- Duties prepaid
- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
Medicube Age-R Glutathione Glow Serum is a serum built for the treatment step right after toner. Its ingredient list leads with Niacinamide, Panthenol, and Squalane, 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. Niacinamide does the most work here as a tone and texture, and the remaining actives round out the texture and finish rather than compete for attention. Placed as the treatment step right after toner, it is meant to be used AM/PM rather than swapped freely between steps. Because this is the Korean-market version of the Age-R Glutathione Glow Serum line rather than a US-reformulated variant, the texture and finish match what Medicube sells through Korean retail.
Key benefits
- Built around Niacinamide, positioned for tone and texture.
- Built around Panthenol, positioned for comfort.
- Built around Squalane, positioned for softness.
- Formulated as a serum for the treatment step right after toner.
- The Korean-market Medicube formula for Age-R Glutathione Glow Serum, matching what Medicube sells in Korea rather than a US-reformulated line.
Key actives
NiacinamideTone and texture
Niacinamide sits near the top of the ingredient list, where the formula puts its heaviest-weighted ingredients. It is an ingredient chosen for tone and texture: a form of vitamin B3 that supports a more even-looking tone and a smoother surface texture with regular use, and layers comfortably under most other actives.
PanthenolComfort
Panthenol sits in the middle stretch of the ingredient list, a supporting rather than a headline 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.
SqualaneSoftness
Squalane sits in the middle stretch of the ingredient list, a supporting rather than a headline role. It is an ingredient chosen for softness: a lightweight, non-greasy emollient that mimics the skin's own natural oils and helps a formula feel softer without a heavy finish.
GlutathioneBrightening
Glutathione sits further down the ingredient list, in a supporting, lower-weighted role. It is an ingredient chosen for brightening: an antioxidant tripeptide with a following in Korean brightening formulas, included here to support a more even, less sallow-looking finish.
AdenosineFirming look
Adenosine sits further down the ingredient list, in a supporting, lower-weighted role. It is an ingredient chosen for firming look: a nucleoside included for its reputation in smoothing the look of fine expression lines, one of the more established anti-aging ingredients in Korean formulation.
Medicube Age-R Glutathione Glow Serum
What does the Age-R Glutathione Glow Serum actually contain?
Its ingredient list is led by Niacinamide, 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 Age-R Glutathione Glow Serum?
Use this serum as the treatment step right after toner. To apply, smooth or press onto cleansed, toned skin and follow with moisturizer. Keep it to AM/PM 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 Age-R Glutathione Glow Serum the same formula sold in Korea, or a US version?
This Age-R Glutathione Glow Serum 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 Age-R Glutathione Glow Serum with other actives in my routine?
Yes, as long as it is used in its own step, the treatment step right after toner, 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 Age-R Glutathione Glow Serum suited for?
It suits most skin types looking for treatment step right after toner rather than a single acute problem. It comes in a 30g format. Anyone with a known sensitivity to a specific ingredient should check the full ingredient panel on this page before buying.
- 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
We accept
How to use
- Cleanse and tone as usual before this serum step.
- Dispense a thin, even layer over the face rather than a thick one.
- Glide the Age-R Booster Pro over skin if using one, or press in with clean hands.
- Follow with a moisturizer rather than skipping that final step.
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.
Reviews
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Medicube, Korean-market original
Medicube's Korean-market serum led by Niacinamide, 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.
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 Squalane comes from a lipid that occurs naturally in your skin.
Alok Vij, MDDermatologist, Cleveland Clinic
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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