Intact Korean batch codes on every unit

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

COSRX

Acne Pimple Master Patch Original Fit 4SET (96 Patches)

COSRX Acne Pimple Master Patch Original Fit 4SET is a 96ea patch whose ingredient list carries Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate alongside Liquid Paraffin.

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$13.99
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Suited to
Dry skinCompromised barrierDull, uneven tone
Helps with
Shoppers looking for Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate in a patchRoutines that want Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate and Liquid Paraffin in one stepFilling the patch step with a Korean-market formula

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How it works

The Acne Pimple Master Patch Original Fit 4SET is a 96ea patch, used apply a patch from it to clean, dry skin at the end of the evening routine. The antioxidant it is built around is Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate, named seventh on its own ingredient list. The same list carries Liquid Paraffin, so the antioxidant is not the only thing on it worth naming. How much of the Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate stays on the skin, and for how long, is decided by the patch format rather than by the list alone. COSRX sells this Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate patch in Korea, and this is that version.

Key benefits

  • Mask, from COSRX's Korean-market lineup, 96 ea
  • COSRX verifies units itself, on cosrx.com, against the batch number and expiration date printed on your unit.

How to use

  1. Press a patch onto clean, dry skin at the end of the evening routine, once every leave-on layer has absorbed.
  2. Pick the size that covers the spot with a little margin, then smooth it down from the center until the edges lie flat.
  3. Leave it on overnight, take it off in the morning, and put a fresh one on the next evening if the spot is still there.
  4. One patch per spot per night. Do not apply one over a serum or a cream, and do not put one on broken skin.

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COSRX Acne Pimple Master Patch Original Fit 4SET (96 Patches)

COSRX Acne Pimple Master Patch Original Fit 4SET (96 Patches)

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Worth knowing

  • Patch test this patch on a small area and wait a day before using it more widely, especially with Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate on the list.
  • Introduce this patch on its own for the first week, so anything your skin does is traceable to the Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate rather than to three changes at once.

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COSRX, Korean-market original

The Original Korean Formula patch from COSRX, 96ea formulated with Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate and Liquid Paraffin, held in the United States and shipped domestically.

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.

COSRX verifies units itself. Find the verification page on cosrx.com and enter the batch number and expiration date printed on your unit. Read them off the package rather than from us, which is the point.

Source: COSRX FAQ

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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