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Rating: 3.3Based on 97 reviews
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- Most helpful positiveThe user's roll: Lyko Creator. The post was made 1 yearsRating: 5 out of 5verified customer
The best I've ever tried!
This vitamin C serum has been a game changer for me! (I have 34-year-old combination skin that is sensitive.) This gives me so much glow, a more even skin tone, and not to mention it's very economical to use. Tiny minus for the smell, but it disappears very quickly thankfully. I'm now on my second bottle and will never stop buying it🤩 (NB! Remember that this serum should be stored in the fridge!) #lykoreview6789 views- The comment was made 1 yearThe serum might stay a little better in the fridge, but it will definitely oxidize. So there's no point in keeping it in the fridge. The product is therefore only good for 2 months.1 likes
- Most helpful negativeThe post was made 11 monthsRating: 1 out of 5verified customer
Oxidizes quickly
After a few weeks, it has oxidized and turned completely brown and unusable.5875 views - The post was made 1 weekRating: 1 out of 5verified customer
Started to itch from the product
Started to itch on my skin from this product. Never had any allergic reaction to any other products before.1 product in post Started to itch from the product208 views- The user's roll: Farmaceut på Lyko. The comment was made 6 daysHey Abby😊 Thanks for your feedback🤍 How sad to hear that your skin started itching. COSRX Advanced The Vitamin C 23 Serum from COSRX contains a full 23% pure vitamin C, which is a high and potent concentration. Even if you haven't had allergic reactions before, the skin can react to such strong active ingredients, especially if it is sensitive or not used to vitamin C. I recommend that you take a break from this and if you want to give it another chance, that you patch test on a small area first for a few days. If you experience the same thing/irritation, it’s best not to use it. Don’t hesitate to reach out if you want help finding another product that suits your skin better instead. Wishing you a super nice day💫
- The post was made 2 monthsRating: 3 out of 5
Really good but poor packaging
Really good and effective in itself. I have bought it several times but it goes bad every time before I get to use it. I use the serum every morning but still it gets too old before I have used it up. A new airtight packaging would be nice. I would rather pay extra for packaging than throw away 1/4.1 product in post Really good but poor packaging1306 views - The post was made 2 monthsRating: 5 out of 5verified customer
Very satisfied
Very good, gave both radiance and evened out my hormonal pigments on both neck and face. Super satisfied1335 views - The post was made 2 months
COSRX Advanced The Vitamin C 23 Serum 20 ml
Hi! What is the difference between the old one that is no longer sold and the new one that has recently come out? I have oily skin and really large pores, does this vitamin C serum work for me? If not, which vitamin C serum would you recommend for me? I would be really grateful if you could recommend a good retinol, I have used retinol from corsx 0.1 but haven't noticed any difference at all!1 product in post COSRX Advanced The Vitamin C 23 Serum 20 ml952 views- The user's roll: Farmaceut på Lyko. The comment was made 2 monthsHi Parwaneh 😊 Thank you for your question✨ What I can find is that the new version of COSRX Vitamin C 23 Serum is primarily a repackaging with the same formula and high concentration, i.e., 23% vitamin C. The serum may work for you if you have oily skin and large pores, but keep in mind that it is quite strong, and some find it feels a bit "oily", especially if you already have oily skin as you mentioned. If your skin is sensitive, it can become irritating and needs to be gradually introduced. If you want something milder and more pore-friendly, a lighter vitamin C serum might be a better fit. Also, feel free to check out this one, which also has a lower concentration but is more fluid lyko.com/sv/cosrx/cosrx-the-vitamin-c-13-serum-20ml-0d80ff7b Regarding retinol: since you haven't noticed any effect from COSRX 0.1%, I would suggest trying The Ordinary Granactive Retinoid 2% Emulsion, which is mild but more effective for improving skin texture and pores. Never use retinol and vitamin C in the same routine; use vitamin C in the morning and retinol in the evening. Also, always gradually introduce retinol 1-2 evenings a week, and don't forget sunscreen during the day. I hope the answer can be helpful and that you have a super nice day🌟2 likes
- The user's roll: Lyko Creator. The post was made 3 monthsRating: 4 out of 5verified customer
Supergood
I really love this serum! I use it in the morning before moisturizer and sunscreen! It gives me the perfect natural glow😍The only thing is that I think it runs out quickly, and it's a bit pricey... #lykoreview1045 views - The post was made 4 months
?
Why have they added palm oil to this serum? It usually tends to be more like a filler in lower quality products... so I wonder how COSRX has reasoned there, what are the benefits of palm oil instead of some other kind?1542 views- The comment was made 4 monthsAha, got it! I wish, though, that this (and many products) would instead contain other oils considering the environmental impact and how comedogenic it is.. 🙄 Yeah, I got it as a gift in a purchase from another site, so I guess I'll try it anyway, but with caution 😄
- The post was made 5 monthsRating: 5 out of 5
Wow
I usually use Phlorentin CF from Skinceuticals - it's so expensive, so I tried this - and I'm super satisfied! In depth, Skinceuticals probably does more, but on the surface, I don't notice a difference between them!1826 views - The post was made 5 monthsRating: 3 out of 5verified customer
Started off great…
Loved it for a long time – then I started reacting to it 😭 One of my eyelids is swelling up, totally weird. Had the same reaction to retinol, incredibly annoying. But I noticed when I counted it that it helped a lot with evening out my skin tone. Deducting for low shelf life (2 months max) and gross smell.1624 views - The post was made 5 months
Retinol
Can this be combined with retinol/retinal?1526 views- The user's roll: Farmaceut på Lyko. The comment was made 5 monthsHi Mathilda Johanna😊 Thank you for your question✨ It is not recommended to use COSRX Vitamin C 23 Serum together with retinol or retinal in the same routine, as both are active ingredients that can irritate the skin when combined. For best results, you can use vitamin C in the morning and retinol/retinal in the evening – or alternate between them on different days. If retinol is new to you, gradually introduce it 1-2 evenings a week and don’t forget sunscreen during the day. I hope my answer can be helpful and that you have a lovely day🌞2 likes
- The post was made 7 monthsRating: 2 out of 5verified customer
Smells bad
This smells very special, like old meat... Not exactly a fresh feeling afterwards 😒 Won't be buying this again.2516 views- The user's roll: Customer service at Lyko. The comment was made 7 monthsHey Karoline 🌟 Thank you for sharing your experience 💛 We totally understand that the scent can be unusual – especially with high concentration C-vitamin products. Since this is a pure C-vitamin serum, it can have quite a distinct smell, which for some might remind them a bit of metal or even fish oil. This is normal and is due to the active ingredient itself. That being said, it’s of course important that skincare also feels pleasant to use – and we completely understand that this didn’t become a favorite for you. Hope you find another variant that suits you better 💛 Have a lovely day! 🌸1 likes
COSRXThe Vitamin C 23 Serum 20 ml
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Description
Ingredients
Use everyday like a daily vitamin for your skin!
A gentle vitamin C serum that is suitable on sensitive skin to use daily! Regular use will fade blemishes, dark spots and freckles and improve overall tone.
Keeping products with high contents of pure vitamin C refrigerated is the best way to keep the vitamin C fresh.
This serum does not contain any added perfume. As COSRX uses natural vitamin C, the product may have a slight, characteristic odor. This is completely normal and a sign that the vitamin is active. The odor will dissipate quickly after application. A slight fizzing sound may occur when the bottle is opened – this is due to natural gas formation from the active ingredients.
Use:
Cleanse your skin and put a toner. Then apply few drops of serum to the skin. User fingertips to gently massage and absorb the serum, starting from the inside of the face working towards the edges
20 ml
- Category:6. Serum