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Rating: 3.4Based on 93 reviews
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- Most helpful positiveThe post was made 9 monthsRating: 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!) #lykoreview6247 views- The comment was made 7 monthsThe 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 7 monthsRating: 1 out of 5verified customer
Oxidizes quickly
After a few weeks, it has oxidized and turned completely brown and unusable.5424 views - The post was made 2 weeks
?
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?479 views- The comment was made 1 weekAha, 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 4 weeksRating: 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!1020 views - The post was made 4 weeksRating: 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.927 views - The post was made 1 month
Retinol
Can this be combined with retinol/retinal?946 views- The user's roll: Farmaceut på Lyko. The comment was made 1 monthHi 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🌞1 likes
- The post was made 2 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.2012 views- The user's roll: Customer service at Lyko. The comment was made 2 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! 🌸
- The post was made 3 months
Combination with pink serum
Hi, Does it make sense to use this together with the pink serum from elixir in the morning? In the evening, I use retinext from elixir.1972 views- The user's roll: Customer service at Lyko. The comment was made 3 monthsHi! 🌞 Thanks for a great question! COSRX The Vitamin C 23 Serum can be used together with Elixir Pink Serum in the morning. They complement each other well – vitamin C works to even out skin tone and provide glow, while Pink Serum provides moisture and soothes the skin. Apply the vitamin C serum first, and let it absorb well before applying the Pink Serum on top. In the evening, it's great that you use Retinext – it creates a nice balance in the routine between active ingredients and care ✨ Just remember: ☀️ Always finish with SPF during the day when you use vitamin C and retinol in your routine. Feel free to reach out if you have more questions 💛
- The post was made 3 monthsRating: 1 out of 5verified customer
Damaged
Picked up the serum from the post yesterday, I'm basically very happy with this serum, but when I opened it this morning it was already completely yellow. When it has become so yellow, it no longer has any effect, disappointing with a brand new serum and now it's already useless.1743 views- The user's roll: Customer service at Lyko. The comment was made 3 monthsHey there 💌 Thanks for letting us know – I totally understand that it’s frustrating when the serum looks discolored right at opening 😞 When it comes to vitamin C products, especially those with pure ascorbic acid, it’s actually completely normal for the serum to have a yellow/orange tint. This color doesn’t necessarily mean that the product is oxidized or unusable – it’s only when it turns dark brown that the effectiveness may be compromised. The slightly "tight" smell (which can remind you of fish oil) and the little puff sound upon opening are also completely normal – this happens because the product has been air-tight sealed according to recommendations to protect the vitamin C. A little tip to keep the serum in the best condition: Store it cool, preferably in the fridge ❄️ – vitamin C actually thrives best in low temperatures and dark environments. But if your serum is already dark brown in color, we’d love for you to send us a picture at kundesenter@lyko.com, so we can take a closer look at it together with you 💌 Wishing you a great day ahead!1 likes
- The post was made 3 monthsRating: 5 out of 5verified customer
really good
such a good serum for thin skin and gives glow 😅👌1655 views - The post was made 4 monthsRating: 2 out of 5
No difference
I think this was a waste, I noticed no difference at all. The smell was a bit strange, I think it reminds me of self-tanner1998 views- The user's roll: Customer service at Lyko. The comment was made 4 monthsHi! 😊 So sorry that this serum didn't live up to your expectations 😔 Thank you so much for your honest feedback – we really appreciate it 💛 Products with vitamin C can feel a bit different from person to person, both in terms of effect and scent. Hope you find a serum that suits you better moving forward! 🌿✨
- The post was made 4 months
Vitamin C and Elixir Niactil 4% and Elixir
Hi. I want an affordable and good vitamin C serum. Can this be combined with Elixir Niactil 4% and Face Formula (Elixir Cosmeceuticals) Balancing Hydration Cream? :)1604 views- The user's roll: Customer service at Lyko. The comment was made 4 monthsHey Camilla 👋 ✅ Yes, you can definitely combine: COSRX The Vitamin C 23 Serum with Elixir Niactil 4% and Face Formula Balancing Hydration Cream 👌 But here are some small tips for best effect and comfort: 🌞 How to use them together: Morning or evening: Vitamin C works great in the morning to protect the skin from free radicals throughout the day. Order: Cleanse COSRX Vitamin C 23 Serum Wait about 5 minutes (due to low pH, and to reduce the risk of sensitivity) Elixir Niactil 4% Face Formula Balancing Hydration Cream 💡 Note! A bit about the combination: Vitamin C and niacinamide (Niactil) can be used together – recent research shows that it is not necessary to avoid this combination, but some with sensitive skin may experience a bit of redness or tingling at first. Then you can alternate between morning and evening, or use Niactil every other day. Wishing you a nice day 💕1 likes
COSRXThe Vitamin C 23 Serum 20 ml
28,90 €*
Rec. price 32,90 €
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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
- Article number:2162-177-0020
Also available in gift box
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Also available in bundle
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The Vitamin C 23 Serum Duo 2x20 ml57,50 €
Without bundle: 57,80 €