The Vitamin C 23 Serum

Reveal Brighter, More Radiant-Looking Skin

COSRX The Vitamin C 23 Serum is a high-strength Vitamin C serum formulated with 23% pure Ascorbic Acid to help improve the appearance of uneven skin tone, post-acne marks, and dull-looking skin. Its lightweight formula is designed to deliver antioxidant protection while supporting a smoother, healthier-looking complexion.

Suitable for those looking to enhance skin radiance, this serum can be incorporated into both beginner and experienced skincare routines, depending on skin tolerance.

Whether you’re dealing with pigmentation, uneven skin texture, or a lack of brightness, COSRX The Vitamin C 23 Serum is designed to support a more even and refreshed-looking complexion with consistent use.

Key Benefits

• Helps improve the appearance of dark spots and post-acne marks
• Supports a brighter and more even-looking complexion
• Provides antioxidant protection against environmental stressors
• Helps improve the appearance of fine lines and skin texture
• Lightweight formula suitable for most skin types
• Works well as part of a complete Korean skincare routine

Key Ingredients

23% Pure Vitamin C (Ascorbic Acid)

A powerful antioxidant that helps visibly brighten the skin while improving the appearance of pigmentation and uneven skin tone.

Vitamin E

Works alongside Vitamin C to provide additional antioxidant support while helping protect the skin from environmental stressors.

Hyaluronic Acid

Helps attract and retain moisture, leaving skin feeling hydrated and comfortable.

Who Is It Suitable For?

COSRX The Vitamin C 23 Serum is suitable for:

• Dull-looking skin
• Uneven skin tone
• Post-acne marks
• Normal skin
• Combination skin
• Oily skin
• Dry skin

If you have sensitive skin or are new to Vitamin C, consider introducing the product gradually and performing a patch test before regular use.

How to Use

1. Cleanse your face thoroughly.
2. Apply toner if part of your routine.
3. Dispense 2–3 drops of COSRX The Vitamin C 23 Serum.
4. Gently apply to the face and neck.
5. Follow with a moisturizer.
6. Apply sunscreen (SPF 30 or higher) during the daytime.

For best results, store the serum in a cool, dark place and close the bottle tightly after each use.

Why Choose COSRX The Vitamin C 23 Serum?

Unlike many lower-concentration Vitamin C serums, COSRX The Vitamin C 23 Serum contains 23% pure Ascorbic Acid, making it a popular choice for users seeking a high-strength antioxidant serum. Combined with hydrating ingredients, it helps support brighter, healthier-looking skin while fitting easily into a consistent skincare routine.

Frequently Asked Questions

Can beginners use COSRX The Vitamin C 23 Serum?

Yes. However, because it contains a high concentration of Vitamin C, beginners may prefer to start by using it two or three times a week before increasing frequency as tolerated.

Is it suitable for oily skin?

Yes. The lightweight texture is suitable for oily, combination, and normal skin types.

Can I use it every day?

Many users can use it daily once their skin has adjusted. Start gradually if you have sensitive skin.

Can I use it with Niacinamide?

Many people include both ingredients in their skincare routine. If you’re introducing new active ingredients, add them gradually and observe how your skin responds.

Does it help with acne scars?

It may help improve the appearance of post-acne marks and uneven skin tone over time when used consistently alongside daily sunscreen.