Use the following zoom and pan buttons to control the image that follows them
Tab through the images or use the previous or next buttons to navigate each product image
Member Exclusive! Earn up to 4X points on purchases & services thru 4.9. Excludes UB Marketplace & gift cards.
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
This brand is excluded from most Ulta Beauty coupons.
We think you'll like
12 items
Use previous and next buttons to navigate the slides of the We think you'll like Product Carousel
Clarins
DOUBLE SERUM Eye Firming & Hydrating Concentrate
The Ordinary
Glycolic Acid 7% Exfoliating and Brightening Daily Toner
Estée Lauder
Revitalizing Supreme+ Youth Power Cream Moisturizer
StriVectin
TL Advanced Tightening Neck Cream Plus
Similar items for you
12 items
Use previous and next buttons to navigate the slides of the Similar items for you Product Carousel
The Ordinary
Hyaluronic Acid 2% + B5 Hydrating Serum with Ceramides
Clinique
Clinique Smart Clinical Repair Wrinkle Correcting Serum
Clinique
Moisture Surge Active Glow Serum with Hyaluronic Acid
Sponsored products
12 items
Use previous and next buttons to navigate the slides of the Sponsored products Product Carousel
CNP Laboratory
Propolis Jelly Lipcerin Lip Gloss
Erborian
CC Red Correct Green Color Corrector SPF25
Questions
Q&A
Showing 5 out of 7 Questions
- 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
- Q
What size is this
- Asked by Julie
- Official Answer By COSRX - Brand Engage0.70 oz.Was this answer helpful to you
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
Don't Love It
I generally like COSRX products, however this product is not my favorite. Initially, when I opened the product, it sounded like opening a can of soda. I wasn't sure if that's the way the product is supposed to sound upon initial opening so I used it but my face does not love it. I'm thinking maybe I...
47 results
I wouldn't
It made my face very sticky, I haven't seen a difference in appearance
I like how this makes my skin feel. But it burns.
Like the product. But it burns my skin for some reason. I have not used it much because of the burning.
Would not purchase again
I did not enjoy this product. It burned my skin after I applied it. Returned item for a refund.
Purchased on sale
I apply at bedtime and add my nightly product on top of.
THE SMELL
I don't understand how this product gets such good reviews. It smells horrific. Maybe I just got a bad bottle, but I did not realize how bad it was until a couple times into use and now it's too late to return. It's really gross.