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Highlights
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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Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
Most Helpful Positive Review
I decided to use Advanced
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...
Most Helpful Critical Review
Disappointed
I bought their Vit C serum in the past and had a great experience, so im thinking this may be a malfuction with this specific bottle. I have only used this twice as i bought it 2 days ago… and its turning my face orange :/ like a streaky orange tanning lotion orange. Its not good, and the smell is s...
60 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
Questions
Q&A
Showing 5 out of 8 Questions
- Q
In what order do you use this serum and the essence and the 6 peptides
- Asked by Ttt
- Official Answer By COSRX - Brand EngageFor optimal results, we recommend applying skincare from lightest to thickest consistency so active ingredients can properly penetrate the skin. 6 Peptide Skin Booster Serum > Essence > Advanced Vitamin C 23 Serum Make sure to patch test any new products and introduce them gradually into your skincare routine. Don't forget to apply sunscreen during the day, especially after using Vitamin C.Was this answer helpful to you
- Q
When you store in refrigerators do you use cap or dropper cap?
- Asked by CC
- Official Answer By COSRX - Brand EngageYou can use the dropper cap. It has the same effect.Was this answer helpful to you
- Q
Can it be used on sensitive skin
- Asked by Cheryl
- Official Answer By COSRX - Brand EngageYes, this serum can be used on sensitive skin, but we recommend doing a patch test first to ensure it works well for you. Vitamin C can sometimes cause irritation, especially for those with very sensitive skin. If you experience any discomfort, consider using it less frequently or consulting with a dermatologist for personalized advice.Was this answer helpful to you
- Q
Are you supposed to shake gently before each use or just after opening new bottle & securing pipette initially?
- Asked by Confused
- Official Answer By COSRX - Brand EngageIt is recommended to gently shake the serum before each use. This helps to ensure that the ingredients are well-mixed.Was this answer helpful to you
- Q
Can I put on dark spots on chest? Can I keep in a cool, dark place rather than the refrigerator?
- Asked by HC
- Official Answer By COSRX - Brand EngageThis product helps improve skin texture and tone, so it can be beneficial for addressing dark spots. However, it is formulated for facial use, if you wish to use on the body, please patch test first to ensure compatibility with your skin. As for storage, we recommend keeping the serum in the refrigerator to help maintain its potency.Was this answer helpful to you