COSRX
Advanced The Vitamin C 23 Serum
- new
Serum for even skin tone with vitamin C, Niacinamide, and Hyaluronic Acid, brightening, smoothing, clarifying, and balancing.
This highly concentrated serum with 23% pure Vitamin C is designed to visibly brighten the skin, refine the complexion, and promote an even skin tone. Additionally, niacinamide, hyaluronic acid, allantoin, and antioxidant-rich ingredients provide hydration, comfort, and a smoother skin feel. The result: a fresh, clear, and revitalized complexion.
The formula is particularly suitable for dull, uneven skin and the first signs of aging.
- Brightening thanks to 23% ascorbic acid.
- Promotes a more radiant and even complexion.
- Niacinamide and hyaluronic acid create a fresh, nourished, clear complexion.
- Ideal for dull skin and visible blemishes.
After cleansing and toning, apply 2–3 drops to the entire face and gently pat in. Follow with moisturizer and sunscreen during the day.
Please note: Do not combine with retinol or acids in the same routine.
Our Clean Beauty concept is primarily defined by the ingredients you won't find in the products with the CLEAN icon:
BHA (butylated hydroxyanisole), BHT (butylated hydroxytoluene), chemical sunscreens, EDTA, ethanolamines, ethoxylated ingredients (Ceteareth-20, emulsifying wax, PEGS, polysorbate-20, polysorbate-40, steareth-20, sulfates), formaldehyde, methylchloroisothiazolinone and methylisothiazolinone, methylcellulose or 2-methoxyethanol, nitro- and polycyclic musk, parabens, petrolatum and paraffin, phthalates, resorcinol, silicones, animal by-products (with the exception of lanolin and beeswax), toluene, triclosan and triclocarban.
With this icon you can see at a glance which products meet the standard of our CLEAN Guide.
Read more in the STUDIO about THE NICHE CLEAN GUIDE!
Dispose of contents/container in accordance with local/regional/national/international regulations.
No specific precautions are required for the use of this product under normal and reasonably foreseeable conditions.

