Description
Description
The COSRX The Vitamin C 23 Serum is a highly-concentrated serum that fades acne scars and brightens the complexion to revitalise dull and dry skin. With 23% Pure Vitamin C (Ascorbic acid), Vitamin E (Tocotrienol) and Hyaluronic Acid, this highly concentrated formula evens skin tone and visibly improves fine lines. It also contains an assortment of hydrating and replenishing ingredients including Allantoin to soothe and hydrate skin.
MADE IN KOREA
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
Disclaimer: While we strive to ensure the accuracy of all our product information, please note that sometimes products are updated or changed without notice. Before use, we recommend referring to the item’s packaging for the most up to date ingredients list, warnings and directions.
Directions
After cleansing and toning, 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, starting from the inside of the face working towards the edges. Store in fridge to prevent oxidation.
* This serum consists of highly concentrated pure Vitamin C. A patch test is recommended before using on face.
* For the first use, attach the enclosed dropper in the product package.
* Recommended to use within 2 months of opening due to active ingredient protection.
* Highly concentrated serum should only be used in the evening? NO! This serum can be used in the morning and/or afternoon.
* If applied in the morning, be sure to use with a SPF of 30 or higher.
NOTE: When opening the cap, it may make a fizzing sound. This is due to the specially designed cap, which helps seal in vitamin C safely.
Caution
▪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 for easily irritated skin, testing on small areas recommended ▪Discontinue use if signs of irritation appear ▪Store in cool and dry places, away from direct sunlight





























Astrid from Rome, Italy –
Ho provato il siero COSRX Vitamin C e sono rimasta sbalordita dai risultati! Le cicatrici delle mie imperfezioni sembrano svanire come per magia, un vero incanto. Inoltre, l’odore è davvero fresco; ti sembra di avere direttamente frutta sulla pelle. La consistenza non lascia alcuna sensazione appiccicosa che a volte i prodotti possono portare con sé – super leggero! Da quando lo uso nella mia routine mattutina qui in Piazza Navona, la luminosità del mio viso ha avuto un bello slancio proprio nei momenti più freddi dell’anno. Un must-have!
Tatiana from Moscow, Russia (verified owner) –
Три слова: чистота, яркость и забота. Эта сыворотка абсолютно изменила мой утренний ритуал. Экспериментировал почти две недели с витамином С – стало легче увидеть себя в зеркале.
Ingrid from Copenhagen, Denmark (verified owner) –
Utilizzando il siero COSRX The Vitamin C 23 per una settimana, ho notato un chiaro miglioramento. La mia pelle era opaca dopo l’inverno, ma ora brilla e le piccole cicatrici stanno svanendo. Adoro la texture leggera; assorbe velocemente senza lasciare residui appiccicosi. Mi fa sentire davvero fresca!
Vladimir from Chicago, USA –
Recently, I’ve incorporated COSRX The Vitamin C 23 Serum into my routine here in vibrant Chicago. Let me tell you—this serum packs a punch! With its striking concentration of Ascorbic Acid, the effects have been transformational; the past few weeks left visible fading on those stubborn acne marks that haunt many urban dwellers like myself. This isn’t just another fancy bottle cluttering your shelf—the combination of Hydrating ingredients such as Sodium Hyaluronate and Allantoin renders it quite luxurious against this chilly Midwestern climate. Brightening results accompany intense hydration: trust me when I say coffee can no longer wake up tired skin; only this exquisite formula does it so gracefully.
Nguyễn Hòa from Hanoi, Vietnam (verified owner) –
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!
Koa from Rio de Janeiro, Brasil –
Galera, esse sérum de vitamina C da COSRX tá simplesmente arrasando! 🥳 Comecei a usar faz umas semanas e minha pele nunca esteve tão radiante. Ele é super levinho e não deixa aquele aspecto oleoso que outros produtos deixam, sabe? O cheiro é bem suave também – tipo uma lufada fresquinha em casa! Além disso, notei as manchas do rosto clareando e minha autoestima só subindo depois desse glow todo. Então se você curte cuidados com a pele sem muito complicar o dia-a-dia… Mermão ou irmã das américas 😀!!! Corre lá pra garantir!
Leila from Cairo, Egypt (verified owner) –
As an aspiring herbalist in Cairo, the luminous effect of COSRX’s Vitamin C serum truly revived my evening rituals. With fine lines visibly softened, each drop imbues moisture while harmonizing blemishes seamlessly.
Kwame from New York, USA (verified owner) –
At first glance, I approached COSRX’s The Vitamin C 23 Serum with some doubt. Another serum promising clear skin seemed like just another hype in the beauty jungle of New York City. However, after a week’s consistent application—my reservations began to dissipate! This powerhouse blend genuinely lightened my post-acne scars and provided a healthy radiance that often feels elusive in our busy lives here. With ingredients like Hyaluronic Acid alongside potent Vitamin C for hydration—it convinced me this is more than marketing; it’s artistry combined with science fostering natural brilliance.