The Cosrx Vitamin C Serum 23% is formulated to improve brightness and reduce visible pigmentation caused by sun exposure or post-acne marks. With a high concentration of pure vitamin C, it helps reduce dark spots and dull patches for a more even and radiant complexion. As a result, the skin looks clearer and more energized with consistent use.
Stronger vitamin C formulas can irritate the skin if not properly balanced. For this reason, this serum includes soothing and stabilizing components to improve tolerance and reduce the risk of stinging or redness. In addition, the antioxidant action supports long-term skin health by defending against environmental factors that accelerate dullness and uneven tone.
With regular application, the serum helps refine tone irregularities and gradually enhances luminosity without relying on exfoliants. Moreover, its lightweight texture absorbs without residue, making it suitable for morning routines before moisturizer and sunscreen. Ultimately, the Cosrx Vitamin C Serum offers an effective approach to radiance improvement and spot correction without aggressive peeling.
Benefits of Cosrx Vitamin C Serum
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Brightens persistent dark spots and post-acne marks
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Improves dull and uneven tone over time
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Protects against oxidative stress and discoloration
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Lightweight formula absorbs without stickiness
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Suitable for consistent radiance-focused routines
How to Use
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Apply after cleansing and before moisturizer
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Use in the morning and finish with SPF
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Start gradually if skin is reactive
🔗 Internal Links (Varied Related Products)
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Cosrx AHA 7 Whitehead Power Liquid — exfoliation before brightening
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Beauty of Joseon Light On Serum (Vita C + Centella) — alternative vitamin C
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SKIN1004 Centella Ampoule — calming layer with active serums
🌍 Outbound Link
Official site: https://www.cosrx.com
❓ FAQ
Is this serum suitable for sensitive skin?
It can be used with caution—start slowly to allow the skin to adjust.
Can I use it at night instead of morning?
Yes — it works both day and night, but daytime use with SPF enhances results.
How long until brightening becomes visible?
Tone clarity often improves within 3–6 weeks of regular use.
Can it be layered with retinol or acids?
It is better to alternate to reduce irritation and preserve tolerance.
