The COSRX Vitamin C 23 Serum is a potent antioxidant serum designed to brighten the skin, reduce the appearance of dark spots, and improve overall skin texture. Here’s a breakdown of the product:

Key Details:

• Volume: 20ml
• Main Ingredient: Contains 23% pure Vitamin C (Ascorbic Acid), which is a powerful antioxidant known for its brightening and anti-aging properties.
• Other Ingredients: It may also include ingredients like hyaluronic acid and niacinamide, which help hydrate the skin and improve its texture.
• Texture: The serum typically has a slightly viscous texture but absorbs well into the skin.
• Benefits:
  • Brightening: Reduces dullness and enhances the skin’s natural radiance.
  • Anti-Aging: Helps to minimize fine lines and wrinkles.
  • Dark Spots: Reduces the appearance of hyperpigmentation, including dark spots and post-acne marks.
  • Protection: Shields the skin from free radicals and environmental damage.

How to Use:

1. Cleanse: Start with a clean face to remove any impurities that could interfere with the serum’s absorption.
2. Tone (Optional): Apply a toner if you use one in your routine, to balance the skin’s pH.
3. Apply the Serum:
   • Use 2-3 drops of the serum and apply it evenly across the face.
   • Gently pat it into the skin until fully absorbed.
   • Focus on areas with dark spots or uneven skin tone for targeted treatment.
4. Follow with Moisturizer: After the serum has absorbed, apply a moisturizer to lock in the serum’s benefits and hydrate the skin.
5. Use Sunscreen (AM Routine): Always follow up with sunscreen during the day, as Vitamin C can make the skin more sensitive to sunlight.

Frequency:

• Morning or Night: This serum can be used once a day, either in the morning or evening. If using it in the morning, ensure you apply sunscreen afterward.

Tips:

• Patch Test: Vitamin C can be potent, so it’s advisable to perform a patch test before full-face application, especially if you have sensitive skin.
• Storage: Store the serum in a cool, dark place to prevent oxidation, which can reduce its effectiveness. Some users prefer to keep it in the refrigerator.
• Avoid Mixing: Avoid using it simultaneously with products containing high concentrations of niacinamide or exfoliating acids, as this can reduce its efficacy or cause irritation.

Regular use of this serum can lead to a brighter, more even complexion and a reduction in signs of aging.