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Niacinamide Duo
Before & After of customer using Niacinamide Serum
How to layer Niacinamide Serum in your routine
Apply pea-sized amount
When to apply AM & PM
Ingredients in Niacinamide Serum
Model with Niacinamide Serum on her face
Model with Niacinamide Bottle

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 (630 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:

  • Fragrance Free
  • Carbon Net-Zero
  • B-Corp
  • Recyclable
  • Travel Size
  • Gluten Free
  • Cruelty Free
  • Pregnancy & Breastfeeding Safe

Awards & Features

Cosmopolitan Award
Glamour Feature

Shipping info

Standard EU Tracked Shipping

  • €5.95**
  • FREE on your first order & over €45**
  • (2-5 business days*)

**The following countries are subject to increased Standard Tracked Shipping rates and increased FREE shipping thresholds. In addition, Express Shipping is not available to these countries.

  • €6.95 - Denmark, Finland, Switzerland, Estonia, Luxembourg - FREE on your first order & over €45
  • €8.95 - Spain, Portugal, Greece, Sweden, Croatia, Bulgaria, Romania - FREE on your first order & over €55
  • €11.95 - Malta, Cyprus, Iceland, Serbia, North Macedonia, Bosnia & Herzegovina, Monaco - FREE on your first order & over €65.

Express EU Tracked Shipping

  • €11.95
  • (up to 4 business days*, if ordered before 4pm CET on business days) 

Tariff or duties

  • Orders with EU shipping destinations won't be subject to any tariff or duties, however please note that there are a small number of EU and European territories that still require tariffs and duties that will need to be covered by the customer.

*Find out more about shipping here.

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4.5
Rated 4.5 out of 5 stars
Based on 630 reviews
Total 5 star reviews: 453 Total 4 star reviews: 112 Total 3 star reviews: 34 Total 2 star reviews: 11 Total 1 star reviews: 20
630 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
    16 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.