The Vitamin C 13 Serum
COSRX The Vitamin C 13 Serum is a lightweight facial serum formulated with 13% pure vitamin C to help improve the appearance of dullness, dark spots, and uneven skin tone. Its formula also contains hyaluronic acid, panthenol, allantoin, and vitamin E compounds to support hydration and skin conditioning. The watery, non-sticky texture fits into a daily skincare routine. Suitable for people seeking brightening and antioxidant care, it should be introduced gradually if you are new to vitamin C.
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COSRX The Vitamin C 13 Serum
COSRX The Vitamin C 13 Serum is a lightweight, water-based facial serum formulated with 13% pure vitamin C (ascorbic acid). It is designed for people who want to improve the appearance of dull skin, dark spots, uneven-looking skin tone, and early visible signs of ageing. Its watery texture absorbs without a heavy or sticky finish, making it suitable for layering with other skincare products.
The formula combines pure vitamin C with ingredients such as 3-O-Ethyl Ascorbic Acid, panthenol, sodium hyaluronate, allantoin, glutathione, tocotrienols, tocopherol, and licorice root extract. These ingredients support the serum’s brightening, antioxidant, and skin-conditioning purpose.
Key Benefits of COSRX The Vitamin C 13 Serum
- Brightening care: Vitamin C helps improve the appearance of dullness and uneven skin tone.
- Dark spot care: Regular use may help reduce the appearance of visible dark spots and discolouration over time.
- Antioxidant support: Vitamin C and vitamin E compounds provide antioxidant support against environmental stressors.
- Hydration: Sodium hyaluronate helps attract and retain moisture, while panthenol and allantoin help condition the skin.
- Lightweight texture: The watery formula is designed to absorb quickly without a sticky finish.
Results vary depending on skin condition, routine, consistency, and individual tolerance. This serum should not be described as a guaranteed treatment for pigmentation or wrinkles.
Who Should Consider This Vitamin C Serum?
COSRX The Vitamin C 13 Serum may suit people concerned about dull-looking skin, uneven skin tone, dark spots, or early visible signs of ageing who want to add vitamin C to their routine.
If you have sensitive skin or have never used a pure vitamin C serum, patch-test first and introduce it gradually. A 13% ascorbic acid formula may cause stinging or irritation in some users. Avoid applying it to irritated or damaged skin.
How to Fit It into Your Skincare Routine
After cleansing and applying toner, use a few drops of serum, then follow with a suitable moisturiser. In the morning, finish with sunscreen rated SPF 30 or higher. You can explore BeautyBellBD’s face serum collection to compare formulas for different skin concerns and skin types.
COSRX The Vitamin C 13 Serum Price in Bangladesh
Looking for the COSRX The Vitamin C 13 Serum price in Bangladesh? Visit the BeautyBellBD product listing to check the latest price, current stock availability, and any available offers. The listing shows a 20 mL size, but availability may change. Confirm the selected product, delivery availability, and applicable delivery charges for your location in Bangladesh before placing your order.
For product-specific details, visit the COSRX The Vitamin C 13 Serum listing on BeautyBellBD.
Ingredients
Ingredients in COSRX The Vitamin C 13 Serum
COSRX The Vitamin C 13 Serum combines pure vitamin C with moisturising and skin-conditioning ingredients. The ingredient roles below are explained in the context of the formula.
Key Ingredients
Ascorbic Acid (13%)
Pure vitamin C is the main active ingredient. It provides antioxidant support and helps improve the appearance of dullness and uneven skin tone.
3-O-Ethyl Ascorbic Acid
A vitamin C derivative included alongside pure ascorbic acid in the formula.
Sodium Hyaluronate
A form of hyaluronic acid that attracts and retains moisture, helping the skin feel hydrated.
Panthenol
A skin-conditioning ingredient that helps support a comfortable-feeling skincare routine.
Allantoin
Helps condition the skin and is commonly used in formulas designed to support skin comfort.
Tocotrienols and Tocopherol
Vitamin E compounds that provide antioxidant support.
Glutathione
An antioxidant included as part of the formula.
Glycyrrhiza Glabra (Licorice) Root Extract
A botanical extract included in the formula’s skin-conditioning and tone-care blend.
Full Ingredient List
Water, Ascorbic Acid (13%), Butylene Glycol, Dipropylene Glycol, Tromethamine, 3-O-Ethyl Ascorbic Acid, Panthenol, Acetyl Glucosamine, Caffeine, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Squalane, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Arginine, Niacinamide, Pentylene Glycol, Glycyrrhiza Glabra (Licorice) Root Extract.
For the manufacturer’s product details, refer to the official COSRX The Vitamin C 13 Serum page.
Ingredient lists can change. Customers should check the packaging of their specific product for the latest full INCI list.
How to Use
How to Use COSRX The Vitamin C 13 Serum
- Cleanse your face: Start with clean skin and gently pat it dry.
- Apply toner if needed: If you use a toner, apply it before the serum.
- Apply the serum: Use a few drops and gently spread the serum over your face, avoiding the eyes and lips.
- Apply moisturiser: Follow with a suitable moisturiser to help maintain skin hydration.
- Use sunscreen in the morning: Finish your daytime routine with broad-spectrum sunscreen rated SPF 30 or higher.
Morning or Night: When Should You Use It?
According to COSRX, this serum can be used in the morning or evening. If you use it in the morning, always follow with sunscreen rated SPF 30 or higher.
Storage Instructions
COSRX recommends keeping this serum refrigerated at 3–10°C. Store it upright in the refrigerator after opening and aim to use it within two months of opening, following the manufacturer’s instructions. Keep the bottle properly closed and avoid unnecessary exposure to heat and light.
Important Precautions
- Patch-test before regular use, especially if you have sensitive skin.
- If you are new to pure vitamin C, start gradually and monitor your skin’s response.
- Avoid applying it to broken, irritated, or damaged skin.
- Stop using it if persistent burning, redness, or irritation develops.
- COSRX advises avoiding use in the same routine with copper peptide products. Consider using these products at different times of day.
- Avoid introducing several strong active ingredients at once until you know how your skin responds.
Highlights
| Feature | Details |
|---|---|
| Product Name | COSRX The Vitamin C 13 Serum |
| Brand | COSRX |
| Key Ingredients | 13% pure vitamin C, 3-O-Ethyl Ascorbic Acid, panthenol, sodium hyaluronate, tocotrienols, tocopherol |
| Strength / Concentration | 13% pure vitamin C |
| Product Type | Facial serum |
| Size | 20 mL |
| Suitable For | People seeking brightening and antioxidant care; sensitive skin users should patch-test |
| Main Concerns | Dullness, dark spots, uneven-looking skin tone, early visible signs of ageing |
| Texture / Form | Lightweight, watery serum |
| Usage | After cleansing and toner, before moisturiser |
| Origin | South Korea |
Frequently Asked Questions
What is COSRX The Vitamin C 13 Serum?
It is a lightweight facial serum containing 13% pure vitamin C. It is designed to help improve the appearance of dullness, dark spots, and uneven skin tone while providing antioxidant support.
What skin concerns does this serum target?
The serum is intended for dull-looking skin, dark spots, uneven skin tone, and early visible signs of ageing. Individual results depend on skin condition and consistent use.
Is COSRX The Vitamin C 13 Serum suitable for beginners?
It may be an option for people starting a vitamin C routine, but 13% pure ascorbic acid can irritate some skin types. Patch-test first and introduce it gradually.
Can people with sensitive skin use this serum?
Sensitive skin may react to pure vitamin C. Test a small area before regular use, avoid applying it to irritated skin, and discontinue use if persistent irritation develops.
Should I use this serum in the morning or at night?
COSRX states that it can be used in the morning or evening. If you apply it in the morning, follow with sunscreen rated SPF 30 or higher.
How many drops should I apply?
COSRX recommends applying a few drops during the serum step. Spread gently over the face and avoid the eye area. Follow the product directions and avoid excessive application.
Can I use this serum with niacinamide?
Niacinamide is already included in this serum's ingredient list. If you want to use another niacinamide product, introduce it gradually and monitor your skin's tolerance.
Can I use this serum with retinol or exfoliating acids?
Combining multiple active ingredients may increase the risk of irritation. Introduce products gradually and consider using strong actives at different times rather than layering them together, especially if you are a beginner.
Can I use this serum with copper peptides?
COSRX advises avoiding use with copper peptide products in the same routine. Consider using them at different times of day.
Do I need sunscreen when using this serum?
Yes. If you use the serum during the day, COSRX recommends applying sunscreen rated SPF 30 or higher afterward.
How should I store COSRX The Vitamin C 13 Serum?
COSRX recommends refrigeration at 3–10°C. After opening, store it upright in the refrigerator and aim to use it within two months, following the manufacturer's guidance.
What size is available in Bangladesh?
The BeautyBellBD listing shows the 20 mL variant. Check the product page to confirm current stock and availability.
What is the COSRX The Vitamin C 13 Serum price in Bangladesh?
The price may change depending on current offers and availability. Visit the BeautyBellBD listing to check the latest price before ordering.
Where can I buy COSRX The Vitamin C 13 Serum in Bangladesh?
You can check the product listing on BeautyBellBD for current availability, ordering information, and delivery options across Bangladesh.
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