COSRX The Vitamin C 13 serum 20ml

Name: COSRX The Vitamin C 13 serum 20ml
Brand: COSRX
SKU: COSRX-VC13S-20ML
Price: 17.99 USD
Availability: InStock

$17.99

Brighten dull skin and fade stubborn dark spots with the COSRX The Vitamin C 13 Serum 20ml. Expertly crafted for sensitive, uneven, and sun-damaged complexions, this high-performance Korean skincare formula delivers a stabilized 13% concentration of pure Vitamin C to restore youthful radiance without causing irritation.

Unlike harsh, unstable ascorbic acid formulas, this daily brightening serum is enriched with Tocopherol (Vitamin E) and Toctrienol to double the antioxidant defense. It works synergistically to refine skin texture, target hyperpigmentation, and boost natural collagen synthesis. The result is a smooth, luminous glass skin finish that visibly revitalizes your skin baseline from within.

Target Concerns

Dullness & Lack of Radiance, Dark Spots, Post-Inflammatory Hyperpigmentation, and Fine Lines

Skin Compatibility

All skin types—expertly calibrated for sensitive, dry, or combination complexions requiring a gentle yet effective daily Vitamin C treatment

Texture & Finish

A lightweight, highly fluid watery serum that glides like silk and absorbs quickly, leaving a refreshed, non-greasy, and healthy glow

Key Ingredients

Pure Vitamin C (Ascorbic Acid 13%), Vitamin E (Tocopherol), Tocotrienol, and Allantoin

Free Shipping

Over $69 Tracked

100% Authentic

Brand Partnership

Direct From KR

Fresh Stock Only

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COSRX The Vitamin C 13 Serum 20ml is a professional-grade brightening treatment formulated with a stabilized 13% concentration of pure Vitamin C (Ascorbic Acid). This dermatologist-tested serum acts as an ideal daily booster to fundamentally improve skin tone, fade hyperpigmentation, and diminish early signs of aging.

The ultra-lightweight, fast-absorbing watery formula is uniquely optimized for complexions that find typical high-strength Vitamin C products too irritating. Enhanced with Super Vitamin E (Tocotrienol) and Tocopherol, it provides advanced multi-layered antioxidant protection while strengthening the skin’s lipid barrier against external stressors.

Infused with Allantoin and Hyaluronic Acid, this clean-beauty formula balances intensive skin illumination with soothing hydration to eliminate dry flakiness. Whether you are recovering from sun exposure or clearing post-breakout marks, this non-comedogenic serum secures a clear, uniformly glowing glass skin structure.

• Texture: Lightweight, fast-absorbing watery liquid serum with a radiant finish
• Skin Type: All skin types, expertly calibrated for sensitive and beginners to Vitamin C
• Best For: Dark spots, dullness, uneven skin tone, and early fine lines
• Key Benefit: 13% Pure Vitamin C + Vitamin E for daily brightening and antioxidant defense
• Volume: 20ml / 0.67 fl.oz.
• Origin: South Korea

• Gently brightens dull, uneven complexions with a stabilized 13% pure Vitamin C formula.
• Fades stubborn dark spots, sun damage, and hyperpigmentation for enhanced skin clarity.
• Boosts antioxidant defense and targets fine lines using a synergistic Vitamin E blend.
• Delivers an instant, non-greasy radiance and refines rough skin texture.
• Formulated with soothing Allantoin to minimize irritation and protect sensitive skin.
• Dermatologically tested, non-comedogenic, and perfectly safe for daily morning or night care.

— Key Ingredients —
• Pure Vitamin C (Ascorbic Acid 13%): A potent antioxidant that visibly brightens skin tone, fades hyperpigmentation, and improves firmness.
• Tocotrienol (Super Vitamin E): Has a significantly higher antioxidant capacity than standard Vitamin E to slow signs of aging and repair skin.
• Allantoin & Sodium Hyaluronate: A calming and hydrating blend that prevents moisture loss and buffers potential irritation from active acids.

— Full List —
Water, Ascorbic Acid(13%), Butylene Glycol, Dipropylene Glycol, Tromethamine, Ethylhexyl Glycerol, Adenosine, Allantoin, Sodium Hyaluronate, Sodium Phytate, Niacinamide, Carthamus Tinctorius (Safflower) Seed Oil, Gardenia Florida Fruit Extract, Tocopherol, Licorice Root Extract, Arginine, Amino Acids, Glutathione

• Step 1: After cleansing and applying your preferred toner, gently shake the serum bottle 1-2 times before opening.
• Step 2: Dispense 2-3 drops of the serum directly onto your cheeks, forehead, and chin using the dropper.
• Step 3: Use clean fingertips to smooth the formula evenly across your face, working outward from the center.
• Step 4: Lightly pat the skin to encourage full absorption of the active brightening ingredients into the deeper layers.
• Step 5: Follow with a moisturizer, and always apply a broad-spectrum sunscreen (SPF 30+) if using during the daytime.

FAQs

Authenticity is our top priority. All items are sourced exclusively from highly trusted, authorized supply chains and official distributors in South Korea. We strictly verify, carefully inspect, and securely package every single product to guarantee 100% authenticity and optimal freshness before it leaves our facility.

We ship worldwide directly from our fulfillment operations in South Korea. We offer a flat rate of $6.99 for orders under $69, and provide 100% Free Shipping for orders $69 and above. Delivery typically takes 7–14 business days, depending on your local customs clearance and location.

Your payment security is our top priority. We safely accept all major international credit cards (Visa, MasterCard, American Express, Discover), Apple Pay, and Google Pay. Every transaction is encrypted and securely processed through Shopify Payments, adhering to the highest industry standards to ensure your personal and financial information remains 100% protected.

You can request a cancellation within 24 hours of placement, provided the order has not yet been processed for shipping. For returns, we accept items within 7 days of delivery, provided they are completely unopened, unused, and in their original packaging. Please note that for all returns, the customer is responsible for all associated costs, including original shipping, return shipping, and any customs clearance fees. Contact our support team at info@seoul-luma.com with your order number to initiate the process.

Yes, absolutely. Once your package is dispatched from our global fulfillment center, an automated shipping confirmation email containing your tracking number and a tracking link will be sent to you immediately. You will be able to monitor your package's journey in real-time from South Korea straight to your doorstep.