With a potent 23% pure Vitamin C concentration, this high-performance brightening serum from COSRX delivers clinical-grade dark spot correction, antioxidant protection, and skin radiance in a concentrated 20g formula. The Advanced The Vitamin C 23 Serum is formulated for those seeking maximum brightening efficacy with one of the highest Vitamin C concentrations available in a K-beauty serum.

Key Benefits

• 23% Pure Vitamin C (Ascorbic Acid): High-concentration pure Vitamin C delivers maximum melanin inhibition for accelerated dark spot fading, hyperpigmentation correction, and visible skin brightening
• Powerful Antioxidant Protection: Neutralizes free radical damage from UV exposure and environmental stressors to prevent premature aging and future dark spot formation
• Collagen Synthesis Stimulation: Vitamin C stimulates collagen production to improve skin firmness, elasticity, and reduce the appearance of fine lines
• Radiance Boosting: Delivers a visibly brighter, more luminous, and even-toned complexion with consistent use
• Concentrated Formula: High-potency 20g format ensures maximum freshness and efficacy of the active Vitamin C

Best For

Dark spots, hyperpigmentation, dull skin, uneven skin tone, and aging skin. Best suited for normal to oily skin. Patch test recommended for sensitive skin.

How To Use

After cleansing and toning, apply a small amount to the face and neck. Gently press into skin until absorbed. Follow with moisturizer and broad-spectrum SPF. Use in the morning for maximum antioxidant protection. Always apply SPF when using Vitamin C actives.

Product Details

• Volume: 20g
• Key Ingredient: Ascorbic Acid (Vitamin C) 23%
• Origin: South Korea
• Brand: COSRX