FAQ
What makes COSRX Advanced The Vitamin C 23 Serum different from other Korean Vitamin C serums?
COSRX Advanced The Vitamin C 23 Serum is formulated with a powerful antioxidant network featuring 23% pure Vitamin C, Super Vitamin E (Tocotrienol), and Glutathione. Based on research, this blend helps stabilize inherently unstable pure Vitamin C, allowing it to be delivered gently and effectively to the skin, making it more comfortable to use compared to many traditional Vitamin C serums.
How does the Vitamin C 23 Serum help with dark spots and hyperpigmentation?
COSRX Advanced The Vitamin C 23 Serum combines 23% pure Vitamin C with Super Vitamin E and Glutathione for powerful antioxidant care. This high-strength formula stays fresh, absorbs smoothly, and delivers visible brightening and texture improvement without irritation even for sensitive skin.
Can COSRX Vitamin C 23 Serum refine pores and smooth skin texture?
Yes. Clinical testing showed a 38% reduction in pore volume and over 92% improvement in skin texture after consistent use. This pure Vitamin C 23% serum helps resurface dull areas, reduce the appearance pores, and leave skin smoother and more even-looking.
When can I expect to see visible results from the Vitamin C 23 Serum?
Most users notice improved brightness and smoother texture within two weeks, with visibly clearer, firmer, and more even-toned skin after four weeks of consistent use. Clinical trials confirmed measurable improvements in pigmentation, pore appearance, and elasticity during this period.
Is the 6 Peptide Skin Booster Serum safe for sensitive or acne-prone skin?
Yes. The formula is non-comedogenic and irritation-tested to ensure it works gently on all skin types. The dual-layer structure combines antioxidant power with soothing hydration from Panthenol and Allantoin, helping repair the skin barrier while minimizing redness or stinging.
How does this serum support anti-aging and skin elasticity?
Vitamin C helps support collagen, while Adenosine boosts this effect for enhanced resilience. Clinical data showed, during this test period, about a 15% improvement in skin elasticity and a reduction in the appearance of wrinkle depth, promoting a smoother, more lifted look with continued use.
How should I store and apply the COSRX Vitamin C 23 Serum for best results?
Keep the serum refrigerated between 3–10°C to maintain freshness. Replace the cap with the provided dropper after opening, shake lightly, and apply a few drops to clean, toned skin. Gently pat until absorbed and follow with moisturizer and SPF during the day.