COSRX The Vitamin C 23 Serum is a potent Korean skincare product formulated to brighten the complexion, reduce hyperpigmentation, and improve skin elasticity. It boasts a high concentration of pure vitamin C (23%) combined with vitamin E and hyaluronic acid to enhance stability and hydration.
🌿 Key Ingredients & Benefits
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23% Pure Vitamin C (L-Ascorbic Acid): Targets dark spots, uneven skin tone, and fine lines.
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Vitamin E: Acts as an antioxidant, stabilizing the vitamin C and providing additional skin protection.
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Hyaluronic Acid: Offers hydration and supports skin elasticity.
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Ferulic Acid: Enhances the stability of the vitamin C and E combination.
📊 Performance Highlights
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Clinical Results: In a 4-week study, users experienced:theemptiesdiaries949418098.wordpress.com
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16.26% improvement in pigmentation.theemptiesdiaries949418098.wordpress.com
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32.89% improvement in skin tone.cosrx.com+2theemptiesdiaries949418098.wordpress.com+2reddit.com+2
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32.36% increase in skin radiance.theemptiesdiaries949418098.wordpress.com
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16.36% improvement in skin elasticity.theemptiesdiaries949418098.wordpress.com
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38.65% improvement in pore volume.theemptiesdiaries949418098.wordpress.com
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27.18% reduction in pore count.theemptiesdiaries949418098.wordpress.com
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4.18% improvement in perceived skin age.theemptiesdiaries949418098.wordpress.com+1influenster.com+1
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🧴 Texture & Application
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Consistency: A bi-phase, oily serum that requires shaking before use.theemptiesdiaries949418098.wordpress.com+1thesun.co.uk+1
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Scent: Strong odor likened to “hot dog water,” typical for high-concentration vitamin C serums.reddit.com+6theemptiesdiaries949418098.wordpress.com+6reddit.com+6
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Application: Apply a few drops to clean skin, preferably at night. Follow with a moisturizer. Use sunscreen during the day.
⚠️ Considerations
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Skin Sensitivity: The high concentration may cause irritation for sensitive skin types.
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Oxidation: Vitamin C serums can oxidize quickly; store in a cool, dark place and use within the recommended timeframe.
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Packaging: The product’s packaging may not be airtight, potentially affecting stability.











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