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COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
COSRX The Vitamin C23 Serum - Sk1ntro
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COSRX The Vitamin C23 Serum 20ml

COSRX
$36.00 $27.00 Save 25%

23% Pure L-Ascorbic Acid Brightening Booster

Give your skin a potent brightening and anti-aging boost with COSRX The Vitamin C23 Serum, a high-performance K-Beauty formula brimming with 23% pure L-ascorbic acid, super vitamin E (tocotrienol), and hyaluronic acid. Designed as a two-layer oil-and-water serum to maintain potency and delivers lasting hydration, it visibly reduces dark spots and pigmentation, smooths fine lines, and enhances skin elasticity.


Lightweight and fast-absorbing, it's best used morning or evening — just shake before use, follow with SPF in the day time, and keep refrigerated to preserve its active strength. 



✨ Why You’ll Love It:

   ✅ High-powered 23% pure vitamin C — Delivers rapid brightening and collagen stimulation 

   ✅ Super vitamin E + Hyaluronic acid — Duo enhances antioxidant support and lock-in moisture

   ✅ Innovative layered formula  — Keeps vitamin C stable while oil layer adds smooth, non-greasy finish



🚨 Important
• Keep Refrigerated (3-10°C) - store upright in refrigerator once opened to prevent oxidation.
• Recommend to use within 2 months of opening due to active ingredient protection.

 

Availability
 
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Tags: 25%off, Ampoules, Brightening, Cosrx, Dullness, Essences & serums, Fine lines, Hyaluronic acid, K-beauty, New, Vitamin c, Wrinkles

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Oil + Pure Vitamin C Layers

Provides moisturizing finish and absorbs smoothly into the skin

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Key Ingredients


• 23% Pure Vitamin C (Ascorbic acid)
Improves blemishes and brighten skin, reduce wrinkles and enhance elasticity

• Super vitamin E (Tocotrienol)
50X higher antioxidant activities than tocopherol, stimulate collagen production

• Hyaluronic Acid
Strong moisture retention to maintain hydration

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FAQs

How often can I use this highly concentrated vitamin C serum?

Daily use is possible—but if you experience irritation, reduce frequency to every other day or every third day. Patch testing is strongly advised before full-face use.

What should you avoid mixing with this serum?

Avoid concurrent use of AHA/BHA exfoliants, benzoyl peroxide, and other strong actives during the same session to prevent overexfoliation or inactivation of L-ascorbic acid. It layers well with hydrating products like ceramides, hyaluronic acid, niacinamide, snail essence, or centella products.

How should you store and use the COSRX Vitamin C 23 Serum?

Store refrigerated (3–10 °C) in a cool, dark place. The serum comes in two layers—shake before use to blend oil and vitamin C. Use within 2 months of opening to avoid oxidation. Apply a few drops to clean skin, followed by moisturizer and SPF 30+ during the day.

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