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KOREAN PHARMACY

One Thing

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Green Tea Serum 80ml

Green Tea Serum is One Thing's ampoule serum (80ml), in the ONE THING, built around Camellia Sinensis Leaf Extract and Trehalose. It is used after toner and before moisturizer, as the routine's concentrated treatment step. This is the same formula Korean shoppers buy off the shelf in Seoul, not a version built for US retail.

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$30.00

80 ml

$37.50 per 100 ml

  • Korean-market formula
  • Ships from California or direct from Korea
  • Korean barcode and batch code intact
Suited to
NormalCombinationDrySensitive
Helps with
Dehydration and a barrier that feels compromisedReactive, easily irritated skin that needs calmingThe look of fine lines and a loss of firmnessA concentrated treatment step

Purchase options

In stock. Arrives in 3 to 7 business days

We accept

You’re $100.00 away from free US shipping.

  • 30-day returns
  • Free US shipping on orders of $100 or more
  • Tracked delivery to your door

How it works

Green Tea Serum is an ampoule serum from One Thing. One Thing is a Korean single-ingredient skincare brand: each toner and serum is built from one named plant extract, with no added fragrance or color. On this jar's own ingredient list, Camellia Sinensis Leaf Extract, Trehalose, Sodium Hyaluronate, Allantoin, Adenosine are named directly, which is what the key-actives panel on this page is built from rather than from the product name alone. Camellia Sinensis Leaf Extract is green tea extract, an antioxidant-rich polyphenol source, and it is why this ampoule serum is positioned the way it is. Use it after toner and before moisturizer, as the routine's concentrated treatment step, giving it a minute to settle before the next layer goes on. One Thing sells this as the Korean-market formula, the same one stocked on shelves in Korea rather than a version built for the US market.

Key benefits

  • Camellia Sinensis Leaf Extract is named directly on Green Tea Serum's own ingredient list
  • Trehalose is named directly on Green Tea Serum's own ingredient list
  • Sodium Hyaluronate is named directly on Green Tea Serum's own ingredient list
  • Green Tea Serum fits after toner and before moisturizer, as the routine's concentrated treatment step
  • One Thing's Green Tea Serum is sold here as the Korean-market formula: over-labeled in English for US sale rather than reformulated for the US market
  • Green Tea Serum keeps the Korean barcode and batch code that print on the unit sold on shelves in Korea

How to use

  1. Apply after toner and before moisturizer. Pat or smooth it over a cleansed face and let it absorb before the next step, AM and PM.

1 of 2

One Thing Green Tea Serum 80ml

Inside the formula

Inside the formula

29
Ingredients declared
No fragrance
on the list

Worth knowing

  • New to this formula or to the brand: patch-test on the inner arm and wait a day before applying it to the face.
  • Discontinue use and rinse the area with water if redness, itching or irritation develops.

Complete the routine

Total for 3 items$100.00

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One Thing Green Tea Serum 80ml

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We’re on gram!

Creators trying on authentic Korean skincare routines and products from us.

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One Thing, Korean-market original

Green Tea Serum, 80ml, ONE THING, One Thing's ampoule serum with Camellia Sinensis Leaf Extract and Trehalose.

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.

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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