Real Fit Vitamin C Serum C-23


COSRX's Real Fit line
Meticulously formulated with 23% pure vitamin C and propolis to boost radiance and leave skin plump and youthful.

What it is:Maximizes the pros whilst minimizing the cons of incorporating vitamins into your skincare! To optimize the benefits, pure vitamins or derivatives are carefully selected to amplify the effects and enhance the delivery of active ingredients into the skin. Synergistic components are also added to minimize the side effects associated with using highly concentrated vitamins.


  • The powerful effect of pure vitamin C
    23% of pure vitamin C (purity 99%) works as a powerful antioxidant to visibly brighten and even skin tone, reduce the appearance of dark spots and wrinkles.
    Leaves the skin looking radiant and healthy with a youthful glow.
  • Cutting edge formula for an enhanced effect
    COSRX's patented technology utilizing Aronia melanocarpa fruit extract and Hippophae rhamnoides extract increases the stability and efficacy of vitamin C.
  • Moisturizing ingredient to supplement the shortcoming of Vitamin C

    60% propolis extract is added instead of purified water to combat the dryness caused by vitamin C. Propolis extract moisturizes and nourishes the skin protecting it from dehydration and stimulation.


  1. Use SPF protection during the day.
  2. Do not use together with other acids like AHAs, BHAs, and retinol.
  3. Mild irritation or redness may occur for first time users. If so, use every other night until skin adjusts.
  4. Contents may turn brown due to oxidation. To avoid this, store in a cool, dark space between 15쨘C ~ 25쨘C, as far away from light and heat as possible.
  5. Use within 2 months of opening.

How to use:

  1. After opening, replace cap with provided dropper.
  2. Apply two to three drops onto clean skin, avoiding eyes.

Propolis Extract, Ascorbic Acid, Aronia Melanocarpa Fruit Extract, Hippophae Rhamnoides Extract, Butylene Glycol, 1,2-Hexanediol, Sodium Lactate, Water, Cassia Obtusifolia Seed Extract, Sodium Hyaluronate, Allantoin