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Reviews & comments

Based on 89 reviews

Most helpful positive
Jill
5 months
verified 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!) #lykoreview
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8 likes
5276 views
- SofiaSofiaSofia
  4 months
  The 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.
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Most helpful negative
Susanna
3 months
verified customer
Oxidizes quickly
After a few weeks, it has oxidized and turned completely brown and unusable.
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2 likes
4462 views
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Mas
1 week
verified customer
really good
such a good serum for thin skin and gives glow 😅👌
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144 views
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Michelle
1 week
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-tanner
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501 views
- Stine
  Customer service at Lyko
  1 week
  Hi! 😊 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! 🌿✨
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Camilla
1 week
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? :)
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430 views
- Mathilde
  Customer service at Lyko
  1 week
  Hey 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
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amalia kolomainen
3 weeks
Unbelievable
The product is in a good bottle. I noticed that my face is more even-toned and the redness has gone away. I like the product and it's very long-lasting. Worth the price. 🥰
853 views
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Helene
1 month
verified customer
Lovely product, gets a deduction for bad smell
I've been using this for about a year now, very satisfied. The skin becomes soft and only needs light moisture on top.
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1079 views
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Anonym
1 month
verified customer
Question
I am undergoing laser treatment for hair removal on my face, and I have recently started using the serum. Is this something that can be used even though I am having laser treatment?
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1 likes
1066 views
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Pia
1 month
verified customer
Pretty okay
This vitamin C serum is pretty okay. It smells bad, leaves marks if you spill it, and separates often. It does the job it says it will.
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1243 views
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Alva
3 months
?
How long does it take to see results against hyperpigmentation?
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3178 views
- Linda
  Skin therapist at Lyko
  3 months
  Hey Alva! It's not possible to say any specific timeframe as pigmentation is one of the hardest things to treat with home care - it depends on how deep they are and what the cause of them is. For some, vitamin C helps a lot (along with UV protection every day and not being in the sun with your face at all), but you have to be patient 🙏 Sometimes if it's hormonal, like contraception being the cause, they can disappear if you stop introducing the hormones. Hope it gets better for you 😎
  1 likes
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Vivvi Cao
3 months
verified customer
Not the best!
Leaves a smell. Had a breakout from the product. Recommend dermalogica's C-vitamin. It's milder.
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4566 views
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Jorunn Marie
4 months
verified customer
Smells bad
I handle the smell just fine, but I understand that it can be a dealbreaker. For me, it absorbs nicely into the skin and is gentle enough for my sensitive skin.
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4509 views
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CosrxThe Vitamin C 23 Serum 20 ml

Name: COSRX The Vitamin C 23 Serum 20 ml
Brand: Cosrx
SKU: 2162-177-0020
Price: 182 NOK
Availability: InStock
Rating: 3.7 (89 reviews)

182 kr*

WOW-price

Free delivery option available from 300 kr, can be sent immediately

* Cannot be combined with discount codes.

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