Medicube
Red Serum Plus
Medicube Red Serum Plus is a Korean-market serum built around Salicylic Acid, 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
- general upkeep alongside the rest of a routinea Korean-market alternative to a comparable US productsteady, repeated use rather than a single application
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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 Red Serum Plus is a serum built for the treatment step right after toner. Its ingredient list leads with Salicylic Acid, Melaleuca Alternifolia (Tea Tree) Leaf Oil, and Centella Asiatica Extract, 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. Salicylic Acid does the most work here as a pore care, 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 Red Serum Plus line rather than a US-reformulated variant, the texture and finish match what Medicube sells through Korean retail.
Key benefits
- Built around Salicylic Acid, positioned for pore care.
- Built around Melaleuca Alternifolia (Tea Tree) Leaf Oil, positioned for clarity.
- Built around Centella Asiatica Extract, positioned for comfort.
- Formulated as a serum for the treatment step right after toner.
- The Korean-market Medicube formula for Red Serum Plus, matching what Medicube sells in Korea rather than a US-reformulated line.
Key actives
Salicylic AcidPore care
Salicylic Acid sits in the middle stretch of the ingredient list, a supporting rather than a headline role. It is an ingredient chosen for pore care: a BHA that works inside the pore lining, included at a level meant for regular use on textured, congestion-prone skin.
Melaleuca Alternifolia (Tea Tree) Leaf OilClarity
Melaleuca Alternifolia (Tea Tree) Leaf Oil sits in the middle stretch of the ingredient list, a supporting rather than a headline role. It is an ingredient chosen for clarity: a botanical long used in blemish-prone routines for its fresh, clean feel on the skin's surface.
Centella Asiatica ExtractComfort
Centella Asiatica Extract sits further down the ingredient list, in a supporting, lower-weighted role. It is an ingredient chosen for comfort: a cica extract long used in Korean formulation for its calming reputation, chosen here to keep the finish comfortable on skin that flares easily.
GlycerinFormula base
Glycerin sits in the middle stretch of the ingredient list, a supporting rather than a headline role. It is a texture ingredient rather than a headline active: a classic humectant that pulls moisture to the skin's surface and keeps the rest of the formula feeling comfortable rather than drying.
PropanediolFormula base
Propanediol sits in the middle stretch of the ingredient list, a supporting rather than a headline role. It is a texture ingredient rather than a headline active: a plant-derived solvent and humectant that helps the other ingredients dissolve evenly and gives the formula a lighter, less sticky finish.
Medicube Red Serum Plus
What does the Red Serum Plus actually contain?
Its ingredient list is led by Salicylic Acid, 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 Red Serum Plus?
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 Red Serum Plus the same formula sold in Korea, or a US version?
This Red Serum Plus 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 Red Serum Plus 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 Red Serum Plus suited for?
It suits most skin types looking for treatment step right after toner rather than a single acute problem. It comes in a 55ml 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
- Use the Red Serum Plus after toner and before moisturizer, in the evening.
- Three or four drops covers the whole face. Press it in with flat palms instead of rubbing it around.
- Toner first so the surface is damp, then this, then about a minute before your moisturizer goes over the top. Salicylic acid is the entry that puts this step in the evening rather than the morning.
- Start at two or three evenings a week and build up from there, because salicylic acid is on this list. Do not use it in the same routine as another resurfacing acid or a retinoid.
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 Salicylic Acid, 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.
BHAs like salicylic acid get really deep into the pores, whereas the water-soluble ones don't go as deep.
Samantha Stein, PA-CDermatology physician assistant, Cleveland Clinic I think it's fair to say I've seen lots of patients use tea tree oil for a variety of skin issues. It's a natural remedy that is known to help.
Simon Hodes, MB ChBFamily physician, Cleveland Clinic
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