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COSRX - The Vitamin C 23 Serum

COSRX - The Vitamin C 23 Serum

5 total reviews


💕 Why we love it! 💕

Illuminate your complexion with the potent CosRX The Vitamin C 23 Serum, a powerhouse elixir designed to breathe new life into your skin. Enriched with a concentrated dose of 23% pure Vitamin C, this serum stands at the pinnacle of skincare innovation, targeting the heart of your complexion concerns to reveal a radiance worth reveiling.


A standout-player in the highly competitive world of K-beauty, COSRX popularity spread by word-of-mouth through word-of-mouth rather than marketing. Founded with the simple mission of good, effective skincare ingredients with as little of the bad stuff as possible. Prioritising affordability and open communication with their customers over marketing - COSRX focuses their spending on ingredients and effectiveness rather than packaging and promotions.

COSRX does not test ingredients or products on animals.

Explore our COSRX offerings

Get your skincare right and everything else will follow. Discover the best Korean Skincare products that'll soothe your skin and get you glowing in no time. Let us help you find the K Beauty routine that’ll work for you.

Key Benefits:

  • High Concentration of Vitamin C: At a 23% concentration, the serum provides an intense, targeted boost to skin brightening, ensuring maximum efficacy in diminishing the appearance of dark spots and uneven skin tone.
  • Enriched with Vitamin E: Infused with a Vitamin E derivative, known for its antioxidant properties, the serum works to amplify the brightening effects of Vitamin C and protect the skin from damage caused by free radicals.
  • Deep Moisturization: With sodium hyaluronate, a salt form of hyaluronic acid, it acts as a sponge holding vast amounts of water in the skin, thereby maintaining moisture levels and strengthening your skin's barrier.
  • Soothing Allantoin: Formulated with allantoin to mitigate skin irritation, the serum ensures a soothing application even for the most sensitive skin types.

CosRX The Vitamin C 23 Serum not only brightens your complexion but is also meticulously crafted to improve the overall texture of your skin. By continuously fighting signs of aging and environmental damage, this serum promotes a youthful, vibrant glow. The lightweight, non-greasy formula absorbs quickly, leaving your skin feeling refreshed and rejuvenated without any sticky residue.v



Water, Ascorbic Acid, Propanediol, Dimethicone, Tromethamine, Panthenol, 3-O-Ethyl Ascorbic Acid, Squalane, Caffeine, Sodium Chloride, Sodium Hyaluronate, Disodium EDTA, Sodium Sulfite, Glutathione, Adenosine, Gardenia Florida Fruit Extract, Dextrin, Acetyl Glucosamine, Allantoin, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Niacinamide, Butylene Glycol, Arginine, Alcohol Denat., Pentylene Gylcol, Glycyrrhiza Glabra (Licorice) Root Extract, Tocopherol, Carthamus Tinctorius (Safflower) Seed Oil, Helianthus Annuus (Sunflower) Seed Oil, Camellia Japonica Seed Oil, Methyl Trimethicone, Helianthus Annuus (Sunflower) Seed Oil, Daucus Carota Sativa (Carrot) Root Extract, Beta-Carotene, Tocopherol

How to Use

For best results, apply 2-3 drops on clean skin after toner and before moisturiser. Gently pat into the skin until fully absorbed. Use sunscreen during the day, as Vitamin C can increase sun sensitivity.

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Customer Reviews

Based on 5 reviews
Duha Alnosaif
the best vitamin c serum

this is literally the best vitamin c serum! it made my skin so smooth and bright. it smells off though but the result is worth it!!! you’ll notice the difference in a week

Patrycja Kowalska
Love it

I really love this product. It helped me with all the blemishes on my skin that I have been fighting for a long time

Zainab Abdulla
Instant magic

I never was one to use vitamin c and this was my first ever and I cant go back!! My skin is so much brighter and the dullness is no longer there.