• Free shipping on orders $120+ · $12.99 under $120

  • Ships from Seoul · 8–14 business days · 30-day returns

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COSRX

COSRX The Vitamin C 13 Serum 20ml

$30.00

In stock

  • ✓Sourced directly in Seoul
  • ✓100% authentic Korean products
  • ✓Free shipping on orders $120+
  • ✓Ships from Seoul in 1-3 business days
Description

A 20 ml serum at 13% vitamin C, the daily-use member of the pair. Lower dose, same instability: it is packaged small and opaque because vitamin C oxidises in light and air, and a big bottle would turn before you finished it.

Who it's for. All skin types starting with vitamin C, and skin looking dull or uneven in tone. Mild tingling on the first applications is common.

How to use. After cleansing and toner, apply two or three drops and press in, avoiding the eye area. Follow with moisturizer. Once a day to start, with sunscreen every morning. Keep it cool and capped.

Key active. Vitamin C at 13%, an antioxidant used for the appearance of brightness and a more even tone.

Sourced in Seoul. This is the Korean domestic SKU, not a reformulated export version.

Shipping & returns

All orders ship from South Korea. Your order is picked and packed by our logistics partner in Bucheon-si, Gyeonggi-do, then travels to the United States as an international shipment.

Handling 1-3 business days, international transit and customs clearance 7-11 business days. Total estimated delivery 8-14 business days. These are estimates, not guarantees.

Free shipping on orders $120+; a flat $12.99 below that. The $120 threshold applies to your order total after any automatic discount. Product prices do not include U.S. import duties or customs fees, which are billed by the carrier and are the responsibility of the recipient.

You may request a return within 30 days of delivery on unused, unopened items. Returns ship to our facility in South Korea and require a Return Authorization Number, which you must request from us before sending anything.

Ingredients

The full ingredient list (INCI) is printed on the product packaging. These are authentic Korean-market formulations sourced directly in Seoul - the domestic SKU, not a reformulated export version.

COSRXCOSRX The Vitamin C 13 Serum 20ml
$30.00

What it is

A 20 ml serum at 13% vitamin C, the daily-use member of the pair. Lower dose, same instability: it is packaged small and opaque because vitamin C oxidises in light and air, and a big bottle would turn before you finished it.

Who it's for

All skin types starting with vitamin C, and skin looking dull or uneven in tone. Mild tingling on the first applications is common.

How to use

After cleansing and toner, apply two or three drops and press in, avoiding the eye area. Follow with moisturizer. Once a day to start, with sunscreen every morning. Keep it cool and capped.

Key active

Vitamin C at 13%, an antioxidant used for the appearance of brightness and a more even tone.

Complete your routine

The steps that go with it, added in one click

Treat
Cleanse
Tone
Moisturize

Routine total

$121.00

4 products · added in one click

100% authentic

Sourced in Korea from the brands. Never counterfeit.

Ships from Seoul

Dispatched from Bucheon. 8-14 business days to the US.

Free shipping $120+

Flat $12.99 under $120. Import duties not included.

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