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Summary
COSRX Advanced The Vitamin C 23 Serum returns renewed with improved stability and a gentler, smoother texture. Brightens dark spots and boosts radiance with concentrated 23% vitamin C.
Benefits
- Helps fade hyperpigmentation and brighten overall skin tone
- Reduces visible signs of aging for a smoother, firmer look
- Revives dull skin to reveal a radiant, healthy glow
- Improves uneven skin tone for a more balanced complexion
- Diminishes dark spots for clearer, spotless skin
Features
- New Look, Advanced Formula
- Enhanced clinical performance for visible results
- Upgraded formula with advanced ingredients
- Redesigned packaging with a clean, contemporary feel
Key Ingredients
- 23% Pure Vitamin C (Ascorbic acid) : Antioxidant activity, brightening(improve blemishes and brighten skin), reduce wrinkles and enhance elasticity.
- Super vitamin E(Tocotrienol) : 50 times higher antioxidant activities than tocopherol, stimulate collagen production.
- Hyaluronic acid : Strong moisture retention properties to maintain hydration.
- Allantoin : Soothes and relieves irritation.
Item 2652090
After cleansing, during the serum phase, shake the bottle lightly once or twice from side to side and apply a few drops to the skin. Use fingertips to gently massage and absorb the serum, starting from the inside of the face working towards the edges. KEEP REFRIGERATED (3~10°C) *Please use immediately after purchase and store upright in refrigerator once opened.
Precautions: Attach the enclosed dropper before first use. Use within 2 months after opening. Suitable for both morning and evening use. When used in the morning, apply SPF 30 or higher.
Water, Ascorbic Acid(23%), Propanediol, Dimethicone, Tromethamine, Panthenol, Ethyl Ascorbyl Ether, Squalane, Caffeine, Sodium Chloride, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Acetyl Glucosamine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Butylene Glycol, Arginine, Niacinamide, Pentylene Glycol, Alcohol Denat., Helianthus Annuus (Sunflower) Seed Oil, Glycyrrhiza Glabra (Licorice) Root Extract, Methyl Trimethicone, Carthamus Tinctorius (Safflower) Seed Oil, Camellia Japonica Seed Oil, Daucus Carota Sativa (Carrot) Root Extract, Beta-Carotene
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Ratings Distribution
35 results
my skin looks so great.
Reviewed at

my skin looks so great. the effect is amazing and it doesn't feel too heavy on my skin.
I decided to use Advanced
Reviewed at

I decided to use Advanced The Vitamin C23 Serum every other day to go easy on my skin in case there was any sensitivity. (I already have and use a daily and nightly regimen of COSRX products) So, I have only used Advanced The Vitamin C23 Serum 4 times in 8 days,and WOW WOW WOW! It works beautifly, I have a dark brown 'age spot' on my cheek that came with the beauty of pregnancy, and I kid you not, this spot has almost completely faded away in just 4 applications! Also, my husband said to me last night, "I can tell the new stuff is really working, already, your skin (texture and glow) looks like a teenager's" So yes, it really really works and is very gentle on my skin, no irritation at all. In fact very calming and soothing on my skin with every other day use. I love this product! Perfect formula, please don't ever change it.
Been using this for years
Reviewed at

Been using this for years and will never not use it. It fades my dark spots so quickly and keeps my skin glowing.
COSRX Advanced The Vitamin C
Reviewed at

COSRX Advanced The Vitamin C 23 Serum has brightened and protected my skin from aging and I love using it for the last 3 years.
I love using this serum
Reviewed at

I love using this serum every morning. It's not sticky or anything and it feels good on the skin. Just make sure that you use sunscreen if you're using this every morning