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HOME COSRX Real Fit Retinol Serum

Rejuvenate dull, tired skin with the Real Fit Retinol Serum from COSRX.

This highly-potent, highly-concentrated formula helps recover damage to skin, reduce redness, and brighten dull skin. Retinyl palmitate(Vitamin A derivative) smooths skin texture, treats sun damage, and improves the appearance of wrinkles. The light-weight texture of the serum allows the benefits to seep into skin deeply and quickly.

  • Calendula officinalis extract soothes and calms skin.
  • Retinyl palmitate and calendula officinalis extract combined serve to gently improve complex.
  • Gentle enough for first-time retinol users.

20 ml


Apply 3-4 drops of the product and gently massage/tap it until full absorption. Continue with cream to lock the moisture. Note:  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 darken due to retinol properties. Note this is a natural phenomenon that does not affect the potency of the product.5. Store in a cool, dark space between 15ºC ~ 25ºC, as far away from light and heat as possible.6. Use within 3 months of opening.


Calendula Officinalis Extract, Butylene Glycol, Glycerin, Helianthus Annuus (Sunflower) Seed Oil, 1,2-Hexanediol, Polysorbate 60, Betaine, Dimethicone, Cetearyl Alcohol, Retinyl Palmitate, Cetearyl Olivate, Panthenol, Arachis Hypogaea (Peanut) Oil, Sorbitan Olivate,Allantoin, Tocopheryl Acetate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Hydroxyethylcellulose, Xanthan Gum, Juniperus Mexicana Oil, Ethylhexylglycerin, Adenosine, Tocopherol