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  • COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)
  • COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)
  • COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)
  • COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)
  • COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)
  • COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)
1 6

5.0 | 21,212 Customers

COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)

COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)

NEW: This year's **Must-Have** Radiant Skin Solution

$31.48 $40.93
23% off | Save $9.45
  • Brightening Power
  • Antioxidant Boost
  • Hydration Support
  • Anti-Aging Benefits

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Subtotal: $31.48

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Kaitlyn R.
Kaitlyn R.
Miami

This is a strong vitamin C and you can tell it’s working. After a couple weeks my dark spots looked lighter and my skin had a brighter, healthier glow.

Monica S.
Monica S.
San Francisco

I use a tiny amount in the morning and follow with sunscreen. My skin tone looks more even and my post-acne marks have faded faster than usual.

Erin P.
Erin P.
Boston

Love the glow this gives—my skin looks more ‘alive’ and smooth. It feels a bit tingly at first but it settles quickly and doesn’t feel greasy.

Vanessa L.
Vanessa L.
Houston

Great for dullness and uneven tone. I started slowly and now use it a few times a week—my complexion looks clearer and makeup looks better on my skin.

4 New Reviews

Transform your skincare routine with this high-strength vitamin C serum that brightens, nourishes, and supports a radiant complexion while tackling uneven skin tone and dark spots.

  • 23% pure vitamin C for brightening
  • Antioxidant-rich formula for skin resilience
  • Hydrating ingredients for balanced skin
  • Includes anti-aging support for youthful glow

Question 1: What benefits can I expect from using the vitamin C serum?
Answer 1: You can expect improved brightness, reduced appearance of dark spots, and overall better skin tone. The serum contains 23% pure Vitamin C, which helps enhance the radiance of the skin while supporting a more resilient-looking complexion.

Question 2: How should I store the vitamin C serum for maximum freshness?
Answer 2: To maintain freshness, store the serum away from heat and direct sunlight. It is recommended to refrigerate it when not in use and to use it within 2 months after opening due to oxidation risks.

Question 3: Can this serum be used with other skincare products?
Answer 3: Yes, it is advised to apply the serum after cleansing and toning, followed by a moisturizer. If used in the morning, be sure to finish with sunscreen to protect your skin.

We offer Free Express Shipping on all orders! Please allow 1-2 Business Days for us to process and ship your order. Estimated Arrival Time: 7-12 business days.
COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)

COSRX Korean Skincare Advanced The Vitamin C 23 Serum (20 ml)

$31.48
$31.48 $40.93
23% off | Save $9.45 Sold out
View full details
Brighten + glow
Spots look lighter
Tone looks even
Antioxidant radiance
Brighten + glow
Spots look lighter
Tone looks even
Antioxidant radiance
Brighten + glow
Spots look lighter
Tone looks even
Antioxidant radiance
Brighten + glow
Spots look lighter
Tone looks even
Antioxidant radiance
Brighten + glow
Spots look lighter
Tone looks even
Antioxidant radiance
Brighten + glow
Spots look lighter
Tone looks even
Antioxidant radiance

Illuminate Your Skin, Boost Your Confidence

Transform your complexion with this potent serum, targeting darkness and dullness to reveal a radiant glow. Feel the difference in your skin's vitality and tone.

  • Brightens skin for a radiant glow
  • Fades dark spots for even tone
  • Hydrates for a refreshed appearance

Experience Radiant, Youthful Skin

  • First Benefit

    Powerful Brightening

    Visibly reduces dark spots and uneven tone.

  • Second Benefit

    Antioxidant Protection

    Defends skin with Super Vitamin E and Glutathione.

  • Third Benefit

    Hydration Boost

    Balances skin with Hyaluronic Acid and soothing ingredients.

 
 

Why Choose Us Over Others?

Discover the unmatched advantages of our formula, designed for efficacy and comfort, ensuring a brighter complexion while nourishing your skin like no other product in the market can.

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Others
23% Pure Vitamin C
Antioxidant Blend
Hydration Boost
Anti-Aging Power
Gentle on Skin
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Frequently Asked Questions

Find quick answers to the most common questions about our product.

This serum brightens your skin, targets dark spots, and evens out tone. With 23% pure vitamin C, it provides antioxidant support while enhancing hydration and delivering anti-aging benefits for a more radiant and resilient complexion.

For optimal results, apply the serum after cleansing and toning, then follow up with your moisturizer. If you use it in the morning, don’t forget to finish with sunscreen to protect your skin from UV damage.

To maintain potency, it's best to use this serum within 2 months after opening. Vitamin C can oxidize quickly, so store it in a cool, dark place, or refrigerate it when not in daily use for freshness.

Yes! While it's formulated with high-strength vitamin C, it includes soothing ingredients like hyaluronic acid and panthenol to help reduce irritation. Always perform a patch test to ensure compatibility with your skin type.