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Cosrx The Vitamin C 13 Serum 20ml

(3 customer reviews)
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COSRX The Vitamin C 13 Serum 20ml is a lightweight daily brightening serum designed to improve dullness, uneven tone, and early pigmentation. With a stable 13% Vitamin C formula, it helps revive tired-looking skin while supporting a smoother, more radiant complexion.

COSRX The Vitamin C 13 Serum 20ml blends Vitamin C, vitamin E, and hyaluronic acid to deliver antioxidant protection and hydration in one step. It’s best for those who want a gentle yet effective glow-boosting serum without heavy irritation.

Volume: 20ml

Dull Skin , All skin types

Made in Korea

Exp : 30 May, 2026

1,445.00 1,900.00

Out of stock

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Q: What is COSRX The Vitamin C 13 Serum 20ml used for?
A: COSRX The Vitamin C 13 Serum 20ml is used to brighten skin, improve uneven tone, and reduce dullness. It helps skin look more radiant and healthy with consistent use.

Q: Can I use COSRX The Vitamin C 13 Serum 20ml every day?
A: Yes, it is designed for daily use, preferably in the morning. Start slowly if you are new to Vitamin C products.

Q: Does COSRX The Vitamin C 13 Serum 20ml help with dark spots?
A: Yes, Vitamin C helps gradually fade dark spots and pigmentation while improving overall skin clarity.

Q: Is COSRX The Vitamin C 13 Serum 20ml suitable for sensitive skin?
A: It may be suitable for some sensitive skin types, but patch testing is recommended before regular use.

Q: Should I use sunscreen with COSRX The Vitamin C 13 Serum 20ml?
A: Yes, sunscreen is essential when using Vitamin C to protect skin and maintain brightening results.

  1. Cleanser → COSRX Low pH Good Morning Gel Cleanser — Gentle daily cleansing
  2. Toner → Anua Heartleaf 77% Soothing Toner — Calms and hydrates skin
  3. Serum/Treatment → Step 3: COSRX The Vitamin C 13 Serum 20ml → This Product — Brightening care
  4. Moisturizer → Illiyoon Ceramide Ato Cream — Barrier strengthening hydration
  5. Sunscreen (AM) → Beauty of Joseon Relief Sun SPF50+ — UV protection

Customers Also Bought

• SKIN1004 Centella Ampoule — Soothes and balances skin
• Beauty of Joseon Glow Serum — Enhances glow and clarity
• COSRX Advanced Snail 96 Essence — Repairs and hydrates skin

COSRX The Vitamin C 13 Serum 20ml is formulated to target dullness, uneven skin tone, and early signs of pigmentation with a stable and beginner-friendly Vitamin C concentration. It works gradually to improve skin clarity while keeping the texture lightweight and comfortable for daily use. The COSRX The Vitamin C 13 Serum 20ml stands out because it balances brightening power with gentle hydration, making it suitable even for first-time Vitamin C users.

What makes COSRX The Vitamin C 13 Serum 20ml effective is its synergistic blend of antioxidants and skin-repairing ingredients. Vitamin C helps brighten and even out tone, while vitamin E enhances antioxidant protection. Hyaluronic acid keeps the skin hydrated and plump. When used consistently, COSRX The Vitamin C 13 Serum 20ml helps skin look fresher, more radiant, and visibly healthier. Pair it with Coxir Vita C Bright Toner  for better absorption and glow support.

Key Benefits

• Brightens Dull Skin — COSRX The Vitamin C 13 Serum 20ml helps improve natural radiance with Vitamin C
• Evens Skin Tone — Reduces the appearance of dark spots and uneven pigmentation
• Lightweight Daily Serum — Absorbs quickly without sticky or heavy residue
• Antioxidant Protection — Vitamin E helps defend skin from environmental stress
• Hydration Boost — COSRX The Vitamin C 13 Serum 20ml supports plump, healthy-looking skin

Key Ingredients

Here’s what powers the COSRX The Vitamin C 13 Serum 20ml:

Ascorbic Acid (Vitamin C 13%)
A powerful antioxidant that helps brighten skin tone, reduce dullness, and improve overall radiance. It supports collagen production for smoother-looking skin over time.

Tocopherol (Vitamin E)
Works alongside Vitamin C to strengthen antioxidant protection and help improve skin nourishment and resilience.

Hyaluronic Acid
A moisture-binding ingredient that hydrates the skin deeply, helping maintain softness and plumpness throughout the day.

Allantoin
Known for its soothing properties, it helps calm irritation and supports skin recovery during active ingredient use.

Panthenol (Pro-Vitamin B5)
Helps attract and retain moisture while soothing and strengthening the skin barrier.

Glycerin
A hydrating humectant that draws water into the skin, keeping it moisturized and smooth.

Sea Buckthorn Extract
Naturally rich in vitamins and antioxidants, it supports skin renewal and enhances brightness.

Best For:

• ✅ Dull Skin — brightness boost
• ✅ Normal Skin — daily glow care
• ✅ Combination Skin — balanced hydration
• ✅ Early Pigmentation — tone improvement

Targets These Concerns:

• Dullness
• Uneven skin tone
• Dark spots
• Loss of radiance

Not Recommended For:

• ⚠️ Extremely sensitive skin — may require patch testing due to Vitamin C activity

How to Use

  1. Clean Face — Apply after cleansing on dry skin
  2. Apply Serum — Use 2–3 drops of COSRX The Vitamin C 13 Serum 20ml
  3. Spread Evenly — Gently pat until fully absorbed
  4. Follow With Moisturizer — Lock in hydration

Use: AM / PM (preferably AM)
Where in routine: After toner, before moisturizer
Pro Tip: Store COSRX The Vitamin C 13 Serum 20ml in a cool place to maintain stability and freshness

Disclaimer

Please check the product in front of the delivery person. Once delivery is completed, no complaints or exchanges will be accepted. Product packaging may change from time to time, so you may receive either the old or new version — this is completely normal.

Based on 3 reviews

4.7 overall
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