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Reviews & comments

Based on 90 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

    Translated from norwegian

    8 likes
    5232 views

    • SofiaSofiaSofia

      3 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.

    to leave a comment
  • Most helpful negative

    Susanna

    3 months
    verified customer

    Oxidizes quickly

    After a few weeks, it has oxidized and turned completely brown and unusable.

    Translated from swedish

    2 likes
    4402 views
    to leave a comment

  • Mas

    21 hours
    verified customer

    really good

    such a good serum for thin skin and gives glow 😅👌

    Translated from swedish

    28 views
    to leave a comment

  • Mo

    1 day
    verified customer

    Good

    And I agree that one must be a bit more conscious and that it’s not just about oneself and that one is in the process of losing some of their own value all the time, also when it comes from other places than on a football field or on other arenas that haven’t been there for many decades before one became

    Translated from norwegian

    58 views
    to leave a comment

  • Michelle

    6 days

    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

    Translated from norwegian

    401 views

    • Stine

      Customer service at Lyko
      5 days
      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! 🌿✨

    to leave a comment

  • Camilla

    6 days

    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? :)

    Translated from norwegian

    350 views

    • Mathilde

      Customer service at Lyko
      6 days
      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 💕

    to leave a comment

  • amalia kolomainen

    2 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. 🥰
    787 views
    to leave a comment

  • Helene

    3 weeks
    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.

    Translated from norwegian

    1024 views
    to leave a comment

  • Anonym

    4 weeks
    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?

    Translated from norwegian

    1 likes
    1014 views
    to leave a comment

  • 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.

    Translated from norwegian

    1200 views
    to leave a comment

  • Alva

    2 months

    ?

    How long does it take to see results against hyperpigmentation?

    Translated from swedish

    3135 views

    • Linda

      Skin therapist at Lyko
      2 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
    to leave a comment

  • 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.

    Translated from norwegian

    4536 views
    to leave a comment

CosrxThe Vitamin C 23 Serum 20 ml

188 kr*
Rec. price 309 kr
WOW-price
Free delivery option available from 200 kr, can be sent immediately
* Cannot be combined with discount codes.

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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Value 479 kr

Also available in bundle

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The Vitamin C 23 Serum Duo 2x20 ml
375 kr
Without bundle: 376 kr

Often bought together

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