Skip to content

Free shipping on all orders over $55

Free shipping on all orders over $55

Free shipping on all orders over $65

Free shipping on all orders over $65

Your cart is empty

Have an account? Log in to check out faster.

Continue shopping
Skip to product information
COSRX The Vitamin C 13 Serum (20ml) - Kiyoko Beauty

COSRX The Vitamin C 13 Serum (20ml)

A daily vitamin C serum to target blemishes, dark spots, fine lines and collagen production. 

$21.00 USD
100% authentic from South Korea
Free shipping on orders over $55

Besties Rewards

Earn 25 points on this purchase.
Learn more.

COSRX The Vitamin C 13 Serum (20ml)

$21.00 USD
COSRX The Vitamin C 13 Serum is a gentle vitamin C serum that is suitable on sensitive skin to use daily! Regular use will fade blemishes, dark spots and freckles and improve overall tone. Vitamin C is a well-known antioxidant that will remove free radicals and prevent aging. It also prevents melanin production but is also involved in collagen production. For optimum efficacy and absorption with minimal irritation, COSRX uses pure Vitamin C at a pH of 3-4.5 COSRX is known for its short ingredients list that features high quality and effective extracts and compounds that help trouble-prone, dry and dehydrated skin, as well as aging and sensitive skin. All COSRX products are 100% made in Korea and cruelty-free.
Features
  • Daily brightening care
  • Fades blemishes, dark spots and freckles
  • Improves overall tone
  • Refines skin texture
  • Reduces size of pores
Skin Concerns
  • Hyperpigmentation
  • Rough skin
  • Fine lines and wrinkles
Skin Type
  • Suitable for all skin types, including sensitive skin
Made In
  • South Korea
Oil-Free
Sulfate-Free
Paraben-Free
Fragrance-Free
Alcohol-Free
Oil-Free
Sulfate-Free
Paraben-Free
Fragrance-Free
Alcohol-Free
  1. After toner, use 2-3 drops of serum or ampoule into your hands or spray 2-3 times across your face
  2. Gently swipe or pat the product across your face, focusing on areas of concern.
  3. Let it absorb fully before moving on to your next skincare step.

Key Ingredients

13% Pure Vitamin C: Improves discoloration and uneven skin tone.
Tocotrienol(Super Vitamin E): Boasts up to 50 times greater anti-oxidizing efficacy than Tocopherol.
Hyaluronic Acid and Allantoin : Provides moisture and relieves irritation.

Ingredient Claims

Mineral Oil Free
Sulfate-Free
Paraben-Free
Silicone-Free
Fragrance-Free
Alcohol-Free
Full ingredients list

Reviews

New to Asian Beauty? We got you!

  • 01 Cleanse

    Oil cleanser → Water-based cleanser

    Double cleansing helps remove makeup, sunscreen, and buildup without stripping your skin. Start with oil, follow with a gentle water-based cleanser.

  • 02 Prep

    Toner / Lotion

    These watery layers hydrate, rebalance pH, and help your skin absorb everything that comes next. Toner pads count too.

  • 03 Treat

    Serums, ampoules, spot treatments

    Target specific concerns like acne, dullness, or texture with concentrated formulas made to do the heavy lifting.

  • 04 Hydrate

    Emulsions, gels, creams

    Lock in moisture and support your skin barrier with the texture that suits your skin type.

  • 05 Protect

    SPF (AM only)

    The most important step. Daily sun protection prevents damage, irritation, and early aging.

  • 06 Pamper

    Masks, peels, eye creams

    Extra steps to treat yourself. Use when your skin (or your mood) needs a little more.

01 Cleanse
02 Prep
03 Treat
04 Hydrate
05 Protect
06 Pamper
Oil cleanser → Water-based cleanser

Double cleansing helps remove makeup, sunscreen, and buildup without stripping your skin. Start with oil, follow with a gentle water-based cleanser.

Toner / Lotion

These watery layers hydrate, rebalance pH, and help your skin absorb everything that comes next. Toner pads count too.

Serums, ampoules, spot treatments

Target specific concerns like acne, dullness, or texture with concentrated formulas made to do the heavy lifting.

Emulsions, gels, creams

Lock in moisture and support your skin barrier with the texture that suits your skin type.

SPF (AM only)

The most important step. Daily sun protection prevents damage, irritation, and early aging.

Masks, peels, eye creams

Extra steps to treat yourself. Use when your skin (or your mood) needs a little more.

Curated Selection

We only stock brands we believe in, from cult classics to rising stars.

100% Authentic

No gray market. No knockoffs. Just the real deal from Korea and Japan.

Fast, Reliable Shipping

Ships duty-free from Canada. No surprise fees, ever.

Community Favourite

Thousands of 5-star reviews and a team that actually gets back to you.