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
or
Earn points on this purchase.
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.
Similar items for you
12 items
Use previous and next buttons to navigate the slides of the Similar items for you Product Carousel
ANUA
Azelaic Acid 10 Hyaluron Redness Soothing Serum
The Ordinary
Hyaluronic Acid 2% + B5 Hydrating Serum with Ceramides
Hero Cosmetics
Mighty Patch Original Acne Pimple Patches
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
La Roche-Posay
Toleriane Hydrating Gentle Face Cleanser for Dry Skin
The Ordinary
Hyaluronic Acid 2% + B5 Hydrating Serum with Ceramides
IT Cosmetics
Do It All Hydrating Sheer Tinted Moisturizer Balm
Sponsored products
12 items
Use previous and next buttons to navigate the slides of the Sponsored products Product Carousel
Hero Cosmetics
Mighty Patch Snow Glow Limited Edition Holiday Hydrocolloid Pimple Patches
VOESH
Hydrating Milky Body Serum with Ceramides & Cica for Barrier Repair
PEACH & LILY
Glass Skin Ginseng Collagen Mask
Hero Cosmetics
Mighty Patch Invisible+ Daytime Hydrocolloid Acne Pimple Patches
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
Like it so far
It's been about 2weeks since I started to use it every morning. I really like it so far. It's light but moisturizing and not irritating like some other Vitamin C serum. I'm hoping this will work on my dark spots eventually
Great product
Finished an Elf vitamin C before moving onto this. Elf's product did nothing, but COSRx - this is it! Consistently used this for a month and a half - now my dark spots proved lighter and the glow this gives me is very impressive! Try it!
waste of money
so disappointed about this only because it was on sale when she use it now and it leaked everywhere inside a bottle there was nothing in the bottle so ridiculous
Impressive for the price
If you use it on its own it will feel little little niddles poking however you can mix it with moisturizer to help with that
Using for YEARS
I am using this product since 2024, the results are always amazing. I would recommend this product for dark acne marks.
Questions
Q&A
Showing 8 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
- Q
What size is this
- Asked by Julie
- Official Answer By COSRX - Brand Engage0.70 oz.Was this answer helpful to you
- Q
Can you use this with prescription RetinA
- Asked by Jude
- Official Answer By COSRX - Brand EngageWe are unable to provide accurate guidance on using with products from other brands. When it comes to combining products like the Advanced Vitamin C 23 Serum and prescription Retin-A, it's essential to proceed with caution. Both Vitamin C and Retin-A can be potent ingredients and may cause irritation when used together, especially for sensitive skin types. If you have sensitive skin or are unsure, consulting with a dermatologist or skincare professional would be a great way to get personalized advice.Was this answer helpful to you
- Q
I already use the Advanced Genefique Serum from Lancome morning and night. I wanted to swap out the Lancome for a brightening specific product in the evening. Do you think this would be a good choice? Do i just cleanse and then apply? Would you suggest following up with another product?
- Asked by Abbey
- Official Answer By COSRX - Brand EngageThe Advanced C 23 Serum is a fantastic choice for brightening your skin. It contains a potent concentration of Vitamin C, which can help to improve the appearance of uneven skin tone and enhance radiance. To incorporate it into your evening routine, you would start by cleansing your face. After cleansing, you can apply the Advanced C 23 Serum directly onto your skin. Be sure to allow it to absorb fully before applying any additional products. For best results, you may want to follow up with a hydrating product, such as a moisturizer, to lock in the benefits of the serum. If you have specific concerns, applying a soothing or hydrating essence before the serum can also enhance your routine. As always, we recommend patch testing any new product to ensure compatibility with your skin.Was this answer helpful to you