Description
The COSRX The Vitamin C 23 Serum 20ml is a highly concentrated brightening serum formulated with 23% pure Vitamin C to visibly improve the look of acne scars, dark spots and uneven tone. Enriched with Vitamin E, Hyaluronic Acid and soothing Allantoin, it helps revitalise dull, dry skin while supporting a smoother, more radiant complexion. This lightweight serum is ideal for those already familiar with Vitamin C care and looking for intensive brightening and skin-tone improvement.
Key Features
- High-strength serum with 23% pure Vitamin C (Ascorbic Acid) for targeted brightening care.
- Helps fade the appearance of acne scars, dark spots and discoloration for a more even tone.
- Supports the look of fine lines and skin texture for a smoother, more refined complexion.
- Contains Vitamin E (Tocotrienols, Tocopherol) and Glutathione to support antioxidant care.
- Hyaluronic Acid, Panthenol and Allantoin help hydrate and soothe dry, stressed skin.
- Squalane, Niacinamide and Licorice Root Extract support a brighter, healthier-looking skin barrier.
- Dropper-type packaging makes it easy to dispense a precise amount of serum.
- Can be used in the morning and/or evening as part of a daily skincare routine when paired with sunscreen during the day.
How to Use
- After cleansing and toning, during the serum step, gently shake the bottle once or twice from side to side.
- Apply a few drops of COSRX The Vitamin C 23 Serum to the skin.
- Use fingertips to gently massage, starting from the center of the face and working outward.
- Store the serum in the refrigerator to help prevent oxidation.
- Before first use, remove the original cap and attach the enclosed dropper.
- This highly concentrated Vitamin C serum can be used in the morning and/or evening.
- If using in the morning, finish with a broad-spectrum sunscreen with SPF 30 or higher.
- A patch test is recommended before applying to the entire face, especially for sensitive skin.
Ingredients
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.
Specifications
| Product Type | Vitamin C facial serum |
|---|---|
| Brand | COSRX |
| Volume | 20 ml |
| Key Concentration | 23% pure Vitamin C (Ascorbic Acid) |
| Country of Origin | South Korea |
| Recommended For | Those concerned about acne scars, dark spots, uneven skin tone and dull, dry skin |
Cautions
- For external use only.
- Avoid contact with eyes.
- Do not apply to broken or inflamed skin.
- Keep out of reach of children.
- Use with care on easily irritated skin; a patch test on a small area is recommended.
- Discontinue use if signs of irritation or rash appear.
- Store in a cool, dry place away from direct sunlight, and keep the bottle tightly closed.
- When opening the cap, a fizzing sound may occur due to the specially designed cap that helps keep Vitamin C sealed.













Nguyễn Hòa from Hanoi, Vietnam –
Nguyên điệu làn da của mình tràn đầy sức sống sau khi dùng Serum Vitamin C. Nguy cơ tăng sắc tố đang tan biến nhanh chóng, điều kỳ diệu!