Reviews & comments

Rating: 4.8Based on 13 reviews
  • Most helpful positive
    The user's roll: Lyko Creator. The post was made 1 week
    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
    327 views
  • The post was made 2 weeks

    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? :))
    186 views
    • The user's roll: Former employee. The comment was made 2 weeks
      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 1 month

    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?
    863 views
    • The user's roll: Skin therapist at Lyko. The comment was made 1 month
      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 2 months

    Hi

    Can I use this in conjunction with common clouds gentle exfoliating BHA toner, as well as the cleansing ?❤️❤️
    1018 views
    • The user's roll: Farmaceut på Lyko. The comment was made 2 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🍂
  • The post was made 6 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?
    3030 views
    • The user's roll: Skin therapist at Lyko. The comment was made 6 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!
      3 likes
  • The post was made 7 months

    Question about use

    Can this be used by pregnant/breastfeeding women? And can it be combined with lumene nordic c booster?
    2896 views
    • The user's roll: Customer service at Lyko. The comment was made 7 months
      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!
      1 likes
  • The post was made 8 months

    Fridge or not?

    Hi! I just wanted to ask if this is good to keep in the fridge or if it can be stored normally in the bathroom cabinet? Thanks in advance!
    3279 views
    • The comment was made 8 months
      Thank you so much for your reply Annsofi!❤️
  • The post was made 9 months

    Torriden \u002B Cosrx?

    Can I combine this with Torriden Toner Pad and Balanceful Cream? I usually use these during the day with the serum from the same line. In the evening, I use Cosmica renewing face oil and Cosrx snail mucin cream. I tend to get pimples and bumps, and I have a few scars and dark spots that won't go away.
    3637 views
    • The user's roll: Customer service at Lyko. The comment was made 9 months
      Hi there Emely ✨ Yes, these can be combined, I'm attaching a suggestion for a skincare routine 🌼 Morning: Cleanser: Gentle cleanser (e.g. CeraVe Hydrating Cleanser). Toner: Torriden Toner Pad (moisturizing). Serum: Cosrx Niacinamide 15 Serum (every other day if irritation occurs). Moisturizer: Torriden Balanceful Cream. Sunscreen: SPF 50 (e.g. La Roche-Posay or COSRX Aloe Soothing). Evening: Cleanser: Double cleanse (oil cleanser + gel cleanser). Exfoliation: 1-2 times a week (e.g. The Ordinary Glycolic Acid). Serum: Cosmica Renewing Face Oil or retinol on some evenings. Moisturizer: Cosrx Snail Mucin Cream. Tips: Exfoliate 1-2 times a week for even skin texture. Vitamin C during the day for dark spots (e.g. Cosrx Vitamin C 23). Retinol in the evening can help with scars and bumps. Remember SPF every day to protect against dark spots. Wishing you a great day ahead!✨
      2 likes
  • The post was made 10 months

    Combine

    Can you combine this with dr. althea 345 relief cream? Looks like the cream also contains niacinamide. And can you combine this with the vit c serum from cosrx? Or should you use one in the morning and the other in the evening?
    3029 views
    • The user's roll: Skin therapist at Lyko. The comment was made 10 months
      Hi Veronika! It should be totally fine to use this serum together with the cream 🥰 Since I don't know enough about your skin type and condition, I recommend starting by keeping the serums in separate routines. Use vitamin C serum in the morning, and niacinamide serum in the evening ✨ Wishing you a nice day!
      1 likes
  • The post was made 10 months

    Cosrx niacinamide

    Can this be used with azelaic acid or would this alone help treat mild periorificial dermatitis (a rash around mouth)?
    2774 views
    • The user's roll: Customer service at Lyko. The comment was made 10 months
      Hello Kim, Thank you for contacting us! 🥰 I would recommend focusing on soothing and hydrating products for the issue you described. For example, Laponie's Calming Serum could be a great choice! 'It’s excellent for managing symptoms of rosacea and periorificial dermatitis (POD) and is a gentle option for hormonal breakouts.' lyko.com/fi/laponie-of-scandinavia/laponie-of-scandinavia-calming-serum-20-ml If you’d like to pair azelaic acid with another serum, I would recommend hyaluronic acid! 💦 You can also fill out our free skin test here to get more personalized recommendations: lyko.com/fi/beauty-scan/ihotesti Have a great week! 🌞
      3 likes
  • The post was made 10 months
    Rating: 5 out of 5
    verified customer

    Best

    I have used up the first bottle and have ordered a new one. I think it works very well on my skin. I use it in my evening routine together with their retinol.
    2401 views

COSRXThe Niacinamide 15 Serum 20 ml

295 kr
Rec. price 309 kr
Free delivery option available, 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:6. Serum

Often bought together

444 kr
642 kr

Recommended products

Customer service