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Niacinamide Duo Shot
How to layer Niacinamide Serum in your routine
Before & After of customer using Niacinamide Serum
Apply pea sized amount
Apply AM & PM
Key ingredients in Niacinamide Serum
Model with Niacinamide Serum
Model with Niacinamide Serum on her face

Niacinamide Serum Duo | The INKEY List

Power packed duo for reducing excess oil, blemishes and redness

4.5
Rated 4.5 out of 5 stars
4.5 Stars (667 Reviews)
£19.00 £20.00 / 2 full-size products
Introducing our powerful duo of lightweight Niacinamide Serums, designed to effortlessly tackle excess oil and redness while seamlessly fitting into your skincare routine.

Formulated with 10% Niacinamide, a naturally occurring B3 vitamin, this serum works to reduce blemishes, control oil production, and calm redness. With a thin, fast-absorbing formula and the added benefit of 1% Hyaluronic Acid, it provides essential hydration while delivering targeted results, leaving your skin smoother and radiant.

This duo includes: 2x Niacinamide Serums (15ml)

Suitable for:

  • All Skin Types
  • Sensitive Skin

Targets:

  • Excess Oil
  • Redness
  • Breakouts & Blemishes

Proud to be:

  • Carbon Net-Zero
  • B-Corp
  • Cruelty Free
  • Recyclable
  • Travel Size
  • Gluten Free
  • Fragrance Free

Awards & Features

Cosmopolitan Award
Stylist Magazine Award
Glamour Award

Delivery info

Standard tracked delivery (Royal Mail)

  • £3.99 or FREE on your first order & orders over £30
  • (2-5 working days*) 

Express tracked delivery (Royal Mail)

  • £5.95 or FREE on orders £50+
  • (Up to 2 working days if ordered before 4pm, excluding weekends*)

*Find out more about Delivery here.

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  • Before and after comparison
    Zaklina uses Fulvic Acid Cleanser with Niacinamide Serum, Tranexamic Acid Serum and Vitamin BCE Moisturiser. “You took my skin (and face) to another level! Thank you INKEY List.”

    Zaklina

  • Before and after comparison
    "This is after just a couple of months using The INKEY List... I couldn't not show you. I had tried everything before and nothing ever helped!"

    Tina C

  • Before and after comparison

    Aysu started using Niacinamide Serum in her routine to improve her skin. After 2 months of use, her redness and breakouts have reduced.


    Aysu

  • Before and after comparison
    Mia is a loyal INKEY customer, using Salicylic Acid Cleanser in her routine along with Succinic Acid Treatment, Mandelic Acid Treatment, Retinol Serum and Niacinamide Serum.

    Mia M

  • Before and after comparison
    Shannon shared her myINKEY skin journey with her TikTok followers. She used Omega Water Cream AM and PM to improve her skin barrier, alongside Beta Hydroxy Acid Serum, Niacinamide Serum, Salicylic Acid Cleanser and Succinic Acid Treatment to tackle her breakouts.

    Shannon

4.5
Rated 4.5 out of 5 stars
Based on 667 reviews
Total 5 star reviews: 477 Total 4 star reviews: 119 Total 3 star reviews: 36 Total 2 star reviews: 12 Total 1 star reviews: 23
Reviews Summary
Customers say this serum has a lightweight, easily absorbed texture that doesn't feel sticky. Many reviews mention reduced oiliness, especially in the T-zone area. The formula helps with uneven skin texture and appearance. While most users report positive experiences, some note it may not suit sensitive skin. Reviews frequently highlight the product's gentle nature and smooth application. Many are repeat purchasers, though some wish for a larger bottle size.
667 reviews
  • Alex T.
    Verified Buyer
    Reviewing
    Niacinamide Serum
    I recommend this product
    Age Range 25 - 34
    Skin Type Dry
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    17 hours ago
    Soothing before retinol

    This serum is great to use before retinol. It soothes my skin and it’s brightening. It really helps with redness. It seems to go a long way because of the texture, you don’t need a lot to cover your face.

  • Denise B.
    Verified Buyer
    Reviewing
    Niacinamide Serum
    I recommend this product
    Age Range 55 - 64
    Skin Type Oily
    Skin Concerns Fine Lines and Wrinkles
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    Yesterday
    Inkey is great and affordable

    I have used this with good results and no skin irritation

  • Ryanna S.
    Verified Buyer
    Reviewing
    Niacinamide Serum
    I recommend this product
    Age Range 18 - 24
    Skin Type Oily
    Skin Concerns Texture, Breakouts, Hyperpigmentation, Oiliness, Acne Scars
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    1 week ago
    Game changer

    This product helped clear my acne and reduce my acne scars. I’ve been using it for years and when I first started I had pretty bad breakouts. Now I rarely break out, a pimple here or there when I’m on my period or something, and the acne scars have faded.