Reviews & comments

Rating: 5Based on 16 reviews
  • Most helpful positive
    The user's roll: Lyko Creator. The post was made 4 months
    Rating: 5 out of 5

    Works!!

    I combine this with Dr. Althea's 345 Relief Cream 50 ml, and they go perfectly together! 💗 I first tested them from my mom's routine, and saw very quickly that I had to buy both products myself 😂🤩 It hasn't been long since I started using them, and I've already used up both the first bottle and the first tube 😅🫶🏻 I see such a big difference, and my skin has never looked or felt better. I have acne-prone and oily skin, and my skin doesn't react to these at all ❤️❤️ Highly recommended!😍✨❤️ #lykoreview
    1882 views
  • The post was made 1 day

    Step in skincare routine

    Hello, I have bought the following products from you Bioderma micellar cleansing gel Pyunkang Yul moisture ampule Jorgobe niacinamide serum 5% Corxs retinol 0.1 Klair fundamental eye butter P:rem safe me relief cream How should I best use these products together? I have combination skin with a shiny forehead and slightly larger pores around the nose as well as a tendency to redness. Thanks in advance 🙂
    24 views
    • The user's roll: Customer service at Lyko. The comment was made 5 hours
      Hey Alfred! 👋🏽 What wonderful products you’ve clicked home! 😍 Here is an easy way to use the products together 👇🏽 🌞 Morning Bioderma Micellar Cleansing Gel Pyunkang Yul Moisture Ampule Jorgobé Niacinamide Serum 5% Klairs Fundamental Eye Butter Make P:rem Safe Me Relief Cream ❗ Always finish with SPF during the day ❗ 🌙 Evening Cleansing Pyunkang Yul Moisture Ampule (2–3 evenings/week) COSRX Retinol 0.1 Klairs Eye Butter Make P Relief Cream Start gently with retinol (2–3 times/week) to avoid irritation and redness. Niacinamide is great for shiny forehead and pores. If the skin feels sensitive, skip retinol that day and focus on moisture. This is a balanced routine that works on pores, shine, and strengthens the skin. Have a lovely day! 🌞
  • The post was made 2 weeks
    Rating: 5 out of 5
    verified customer

    Really good

    Really effective product, thanks to this my acne scars have lightened🩷
    229 views
  • The user's roll: Lyko Creator. The post was made 4 weeks
    Rating: 5 out of 5

    Such a good and pleasant serum

    This is a really powerful serum for those who want to work on skin texture, enlarged pores, or shine. With a concentration of a whole 15% niacinamide, you quickly notice the difference in how the skin balances and gets a more even tone. What I especially like is that it also contains zinc, which really helps keep impurities in check. The formula is light and absorbs well, but since the concentration is so high, it can feel a bit "active" on the skin right upon application. It’s not for the most sensitive skin, and you should ease into it carefully. The bottle is quite small (20 ml), but since you only need a few drops, it still lasts a while. A top choice for those with combination to oily skin who want visible results!
    352 views
  • The post was made 1 month

    Combine with

    Hi, Can I combine this serum with torriden dive in hyaluronic serum? Thank you
    420 views
    • The user's roll: Farmaceut på Lyko. The comment was made 1 month
      Hello Jessa😊 Yes! You can safely combine COSRX The Niacinamide 15 Serum with Torriden DIVE‑IN Hyaluronic Acid Serum. Apply the niacinamide serum first on clean skin, then layer the hyaluronic acid serum for extra hydration. On days where your skin feels drier you can also reverse the layering order – they work well together and are gentle on the skin. Hope this helps and wishing you a great day💫
      1 likes
  • The post was made 2 months
    Rating: 5 out of 5
    verified customer

    Full hit

    This is one of the best serums I have tried! I think this is comparable to the serums I have tested from Medik8, even though the price differs significantly. As soon as I get tendencies for blemished skin, I use this for a few days and then there are no major breakouts 😁 it works well regardless of whether my skin is dry or oily. The serum has no scent, so it suits everyone regardless of preference in that way 🤭
    648 views
  • The post was made 4 months

    Against acne

    Hi! I use Niactil 4% from Elixir against acne and it works really well. Is this a good supplement to the routine, or will they do too much of the same? :))
    1228 views
    • The user's roll: Employees at Lyko. The comment was made 4 months
      Hi there!💚 Since you are already using Niactil 4% with niacinamide, there’s no need to add COSRX The Niacinamide 15 Serum — it might be too much of the same.
  • The post was made 6 months

    Becoming a little dry

    I have started testing this routine: First: The Niacinamide 15 Serum 20 ml Then: Advanced Snail 92 All In One Cream Tube 100 g I think the routine feels really good, but I experience that I am becoming a little dry. Is there anything you think I should add to the routine for more moisture?
    1775 views
    • The user's roll: Skin therapist at Lyko. The comment was made 6 months
      Hey Julia, That sounds like a really great idea to add the Hyaluronic serum, and it works super well with the Niacinamide serum. You can use Niacinamide first and then Hyaluronic. Good luck 🩷
  • The post was made 6 months

    Hi

    Can I use this in conjunction with common clouds gentle exfoliating BHA toner, as well as the cleansing ?❤️❤️
    1840 views
    • The user's roll: Farmaceut på Lyko. The comment was made 6 months
      Hi Linda Emilia😊 Thank you for your question!✨ Yes, you can use Common Clouds Cloud Water Gentle Exfoliating BHA Toner together with COSRX The Niacinamide 15 Serum. Both products are effective for improving skin texture and reducing visible pores. To avoid over-exfoliation, it is recommended to use the toner in the evening and the serum in the morning. Remember to always use sunscreen during the day, especially when using BHA products. Hope the answer can be helpful and that you have a super nice day🍂
      1 likes
  • The post was made 11 months

    Looking for some tips :)

    Hey :) I just bought these 3 Products: *AHA 7 Whitehead Power Liquid *Advanced Snail 96 Mucin Power Essence *Advanced Snail 92 All in one Cream I am 36 years old and have a tendency to get pimples and white “bumps” on my skin. Can this serum be a good alternative to the products I just bought, and if so, in what order should I use/apply them? Can you sunbathe while using products with niacinamide in them?
    3613 views
    • The user's roll: Lyko Creator. The comment was made 11 months
      Hey E ✨ So fun that you want to try Cosrx! Yes, the Niacinamide serum can be a good complement to the other products, but keep in mind that it is active, so start with just once a day or every other day (since I don't know your skin), after essence but before cream/UV protection. Niacinamide does not make the skin sun-sensitive, but AHA does. AHA 7 is like a peeling that should stay on. Start with once a week in the evening after cleansing on dry skin (not together with the serum, at least not in the beginning) and essence plus cream on top. Then essence and cream work well both morning and evening after cleansing 👌 Don't forget UV protection! I think this one is super good lyko.com/sv/cosrx/cosrx-ultra-light-invisible-sunscreen-50ml If you have more questions, feel free to email 💌 hudterapeuten@lyko.com Good luck!
      4 likes
  • The post was made 1 year

    Question about use

    Can this be used by pregnant/breastfeeding women? And can it be combined with lumene nordic c booster?
    3373 views
    • The user's roll: Customer service at Lyko. The comment was made 1 year
      Hey there 💕 Cosrx The Niacinamide 15 Serum contains niacinamide, which is a mild and effective ingredient known to help even out skin tone and strengthen the skin barrier. It is generally considered safe for both pregnant and breastfeeding individuals, but as always, we recommend consulting your doctor or a dermatologist to be completely sure, especially if you have specific skincare needs during pregnancy or breastfeeding. When it comes to combining this serum with Lumene Nordic C Booster, it is possible, but be aware that vitamin C and niacinamide can sometimes react with each other, although recent research suggests they can be used together without issues. For best results, you can test the products at different times of the day (for example, vitamin C in the morning and niacinamide in the evening) to see how your skin reacts. Also, always remember to use sunscreen in the morning when using products with vitamin C! ☀️🧴 Wishing you a great day ahead!
      2 likes

COSRXThe Niacinamide 15 Serum 20 ml

Sale price 235,50 kr
Without campaign 314 kr
Combo Deal 25%
The price applies when you buy 2 items for a total of 590 kr.
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Free delivery option available from 300 kr, can be sent immediately

Total acne care with 15% niacinamide

Highly concentrated serum that combines the maximum concentration of niacinamide with optimal ratios of synergistic ingredients for total acne control.

Use:
After cleansing, during the serum phase, apply a few drops to the skin. Use fingertips to gently massage and absorb the serum, starting from the center of the face working towards the edges.

20 ml
  • Category:Serum/Oil

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