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SKU 100006926

The Vitamin C 13 Serum

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$9.44$15.71Save 40%

Only at SkinSeoul

We want you to feel reassured when purchasing your skincare products on SkinSeoul, so we offer an authentic product guarantee for all orders. We ship all orders direct from our warehouse in Korea and we guarantee that we will refund your order in full if you believe your product is inauthentic. If you are concerned about the authenticity of your product, please send us an email and our team will be able to assist.

We created SkinSight, a cutting-edge AI ranking system designed to bring you the very best in skincare, straight from South Korea.

Powered by millions of authentic consumer insights, SkinSight provides rankings based purely on the voices and opinions of Korean beauty enthusiasts—free from editor bias, panels, or sponsorships.

Uncover the latest trends and top-rated products in Korean skincare. Explore now.

We are happy to price match an authorized retailer within 15 days of the purchase date under the following conditions:

  • The item must be available to purchase on the competitor’s website. We do not price match from eBay or clearance stores.
  • The item must be the same brand, product, variant, and volume.
  • Clearance and final sale prices will be matched solely at the discretion of our support team.

If you would like to make a price matching request, please send an email to our team and we’ll be able to assist.

shipping-car Delivery in 8 - 11 business days

Enjoy free shipping on orders over $49

Product Information

COSRX The Vitamin C 13 Serum is an ideal choice for those seeking to revitalize their skin, thanks to its potent 13% pure vitamin C formula that targets dullness and uneven skin tone. This serum harnesses the power of its key ingredient to brighten the complexion and reduce the appearance of fine lines, making it a must-have for achieving a radiant, youthful glow.
  • Brightens skin with 13% pure Vitamin C
  • Promotes collagen production, reduces signs of aging
  • Fades dark spots, evens out skin tone
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All Ingredients

Only at SkinSeoul

Price Matching Guarantee

We are happy to price match an authorized retailer within 15 days of the purchase date under the following conditions:

  • The item must be available to purchase on the competitor’s website. We do not price match from eBay or clearance stores.
  • The item must be the same brand, product, variant, and volume.

Clearance and final sale prices will be matched solely at the discretion of our support team. If you would like to make a price matching request, please send an email to our team and we’ll be able to assist.

Only at SkinSeoul

Return + Exchange Policy

  • Damaged/Faulty Products: If your order arrives damaged or faulty, please reach out to us within 5 days. You can choose between a replacement (with return shipping refunded) or a full refund (including return shipping).
  • Hazardous Items (e.g., broken bottles): Simply provide us with a photo or video of the item, and we’ll process your refund or exchange—no need to return the product.
  • Change of Mind Returns: If you’ve had a change of heart, we accept returns within 7 days, as long as the product is unopened & unused. Return shipping costs will be covered by the customer, and refunds will be issued after inspection.
  • Refund Processing Time: Credit card: 7-14 working days, PayPal: 3-5 working days.
  • Missing Items: If anything is missing from your order, please contact our support team with your order details & photos, and we’ll make sure to send the missing items to you as soon as possible.

For assistance,email support@skin-seoul.com – we’re here to help!

Only at SkinSeoul

3x Authenticity Guarantee

We want you to feel reassured when purchasing your skincare products on SkinSeoul, so we offer an authentic product guarantee for all orders. We ship all orders direct from our warehouse in Korea and we guarantee that we will refund your order in full if you believe your product is inauthentic. If you are concerned about the authenticity of your product, please send us an email and our team will be able to assist.