100% authentic Korean-market formulas

Free US shipping on orders of $100 or more. 100% authentic Korean-market formulas. Ships from our California warehouse, at your door in 3-5 days. Intact Korean batch codes on every unit.

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KOREAN PHARMACY

Purito Seoul

TXA 6% Niacinamide 10% Retinal Serum

Purito Seoul TXA 6% Niacinamide 10% Retinal Serum is a serum led by Niacinamide on its own ingredient panel, sourced as the Korean-market formula.

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$22.99Comparable US listings run $23.00 (4 dated US observations, checked 10 September 2026)

30ml

  • Korean-market formula
  • Ships from our California warehouse
  • Duties prepaid
Suited to
Normal skinDry skinCombination skin
Helps with
Layering a concentrated, targeted step into an existing routineShoppers who want Purito Seoul's own Korean-market formula rather than a US-shelf version

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Next step in this routine

  1. Cleanse
  2. Prep
  3. Treat
  4. Sealnext
  5. Morning finish

Also standing in Seal: Dr. Althea 345 Relief Cream, $23.52.

  • Duties prepaid
  • 30-day returns
  • Free US shipping on orders of $100 or more
  • Dispatched within 2 business days

How it works

Niacinamide leads the ingredient panel on this serum. 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. On this panel it sits alongside Tranexamic Acid, Hydroxydecyl Ubiquinone and Adenosine. Tranexamic Acid is a synthetic amino acid derivative used for the look of stubborn discolouration and post-blemish marks. It is water soluble, stable and comfortable next to niacinamide, which is how it is usually paired.

How to use

  1. Use it at night and only at night, after toner, on a face that is completely dry.
  2. Two or three drops for the whole face, kept off the eyelids and the corners of the mouth.
  3. A moisturizer goes over it every time, and sunscreen goes on the next morning without exception.
  4. Two evenings a week for a fortnight, then build. Do not use it with an acid, a scrub or a second retinoid.

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Purito Seoul TXA 6% Niacinamide 10% Retinal Serum

Purito Seoul TXA 6% Niacinamide 10% Retinal Serum

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Key benefits

  • Niacinamide named on this product's own ingredient panel, near the top of it
  • Tranexamic Acid on the same panel, the formula's active
  • Hydroxydecyl Ubiquinone on the same panel, the formula's antioxidant
  • 30 ml to a unit
  • Korean GS1 barcode matched against a Korea sourcing supplier's record for this item

Worth knowing

  • Patch test on a small area first and wait a day before full use, especially the first time.

Reviews

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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

Purito Seoul, Korean-market original

Purito Seoul's Korean-market serum or ampoule, 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 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

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