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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 (656 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
FREE
on orders over £30
(2-5 working days*)

Express tracked delivery (Royal Mail)

£5.95 (Up to 2 working days if ordered before 4pm, excluding weekends*)

FREE express tracked delivery on orders £50+

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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 656 reviews
Total 5 star reviews: 469 Total 4 star reviews: 116 Total 3 star reviews: 36 Total 2 star reviews: 12 Total 1 star reviews: 23
656 reviews
  • Caroline
    Reviewing
    Niacinamide Serum
    I recommend this product
    Rated 5 out of 5 stars
    4 hours ago
    5 Stars

    Love it!! And I need it for the years of sun damage I'm undoing.

  • Sophie H.
    Verified Buyer
    Reviewing
    Niacinamide Serum
    I recommend this product
    Age Range 25 - 34
    Skin Type Oily
    Skin Concerns Texture, Redness, Oiliness, Acne Scars, Breakouts
    Sensitive Skin Friendly? Yes
    Rated 4 out of 5 stars
    3 weeks ago
    Helping to control my oily skin, redness & large pores!

    I used to use this in the morning and wasn't a fan as it didn't sit well under make up. I now use after cleansing in the evening, before applying the azelaic acid. I suffer with large pores, texture and redness from rosacea and have found that in the last month sticking to a consistent skincare routine and using an LED mask alongside it I've begun noticing an improvement in my rosacea for the first time in years!

  • Louise H.
    Verified Buyer
    Reviewing
    Niacinamide Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Dryness, Redness, Plumping, Breakouts, Fine Lines and Wrinkles
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    4 weeks ago
    Redness and breakout saviour.

    This has definitely helped reduce my hormonal breakouts. The picture was taken during a time they'd normally be noticeable, but no, instead I have nice, mostly clear skin.

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