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[COSRX] The Vitamin C 23 serum 20ml

Extra 25% off! Code: WOW25
Regular price $17.00 USD
Sale price $17.00 USD Regular price $23.00 USD
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Hypoallergenic 23% pure vitamin C

Antioxidant brightening booster with high performance for preventing early signs of anti-aging. 

- Fade acne scars and hyperpigmentation
- Brightens dull skin
- Firms and plumps
- Diminishes finelines and wrinkles


- Dull skin
- Uneven skintone
- Dark spots and hyperpigmentation
- Early signs of aging

Clinical Results in 4 Weeks 
- 16.26% improvement of pigmentation (visible melasma and blemishes) 
- 32.89% improvement of triple-complexion skin tone (red skin tone) 
- 32.36% effect of brightening (skin radiance) 
- 16.36% improvement of elasticity (internal elasticity) 
- 38.65% improvement of the pore (volume) 
- 27.18% improvement of the pore (count) 
- 4.18% improvement of skin age 
*Based on clinical trials of 20 subjects. *Dermacosmetic Skin Science Laboratory Co., Ltd.

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Suggested use

After cleansing, during the serum phase, shake the bottle lightly once or twice from side to side and apply a few drops to the skin. Use fingertips to gently massage and absorb the serum, starting from the inside of the face working towards the edges.


Water, Ascorbic Acid(23%), Propanediol, Dimethicone, Tromethamine, Panthenol, Ethyl Ascorbyl Ether, Squalane, Caffeine, Sodium Chloride, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Acetyl Glucosamine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Butylene Glycol, Arginine, Niacinamide, Pentylene Glycol, Alcohol Denat., Helianthus Annuus (Sunflower) Seed Oil, Glycyrrhiza Glabra (Licorice) Root Extract, Methyl Trimethicone, Carthamus Tinctorius (Safflower) Seed Oil, Camellia Japonica Seed Oil, Daucus Carota Sativa (Carrot) Root Extract, Beta-Carotene

Customer Reviews

Based on 17 reviews
Holy Grail, vitamin C

I’ve tried a couple of different vitamin C‘s and this one is the best. This is a strong, vitamin C, and it’s going to feel sticky and it’s going to smell but it’s going to dry on beautifully and you will notice the difference. And even if you don’t like how it dries on, it doesn’t matter because it actually works. Don’t waste your money on the popular $30 Goodall, green tangerine, vitamin C serum just because that one is popular. That one does nothing it’s too gentle it does nothing! Buy this one. Trust me I have used literally 10 bottles.


applies well without pilling or other negative reactions, seems effective so far but will hopefully see more results with continued usage




So far so good. No weird smell and it doesn't make my face flush. Hopefully over time I'll notice more benefits, as I haven't had this long.

Temitayo Onwuamaegbu
It's a "Must Have"

Amazing product!!!. My mom and I noticed a visible difference within 3 days of use. The smell isn't the best but the effectiveness is 10/10.