Cosrx The Vitamin C 23 Serum 20ml

COSRX The Vitamin C 23 Serum is a lightweight, non-sticky brightening serum designed for experienced vitamin C users seeking high-potency results. This concentrated formula absorbs smoothly into skin, leaving a refined finish that preps the complexion for visible transformation.

Suitable for both morning and evening use, this serum works best during the serum stage of your routine, applied after cleansing and toning. If used in the morning, always follow with broad-spectrum SPF 30 or higher to protect skin from environmental stressors. Avoid combining with retinol or other actives in the same routine to minimize irritation.

Formulated with Ascorbic Acid at 23% concentration—the highest stable level for effective absorption—this serum is paired with Tocotrienol (Super Vitamin E with 50 times the antioxidant power of standard tocopherol) and Glutathione to stabilize and amplify brightening effects. Supporting actives include Sodium Hyaluronate for hydration, Panthenol for soothing, Allantoin for barrier repair, Adenosine for elasticity, and Acetyl Glucosamine for texture refinement.

• Clinically proven to reduce pore volume by up to 38% and improve skin texture by over 92% with consistent use
• Fades hyperpigmentation, acne scars, and dark spots while blocking melanin synthesis caused by UV exposure
• Boosts skin elasticity by approximately 15% and reduces the appearance of fine lines and wrinkle depth
• Hypoallergenic and non-comedogenic formula suits all skin types, including sensitive and acne-prone skin

How to Use: After cleansing and toning, shake the bottle lightly once or twice from side to side. Apply a few drops to the entire face using fingertips, gently massaging from the center outward for optimal absorption. Follow with moisturizer. For daytime use, apply SPF 30 or higher. Store refrigerated between 3–10°C and replace the cap with the provided dropper after opening. Use within two months of opening for maximum efficacy.