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2 Niacinamide Serums on shelf
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Skincare product with text on how to layer Niacinamide Serum in a routine on a neutral background
Ingredients in Niacinamide Serum
Cosmetic dropper with Niacinamide Serum being applied to skin, accompanied by usage instructions.
Before and after comparison of a person's face with acne on the left and clear skin on the right.
Model holding a bottle of Niacinamide Serum
Model applying Niacinamide Serum to her face

10% Niacinamide Serum Duo

Targets acne, oil control and pore minimization

4.6
Rated 4.6 out of 5 stars
4.6 Stars (774 Reviews)
$21.00 / 2 full-size products

Use code MEMORIAL20 for 20% off! Exclusions apply

What you get: A lightweight 10% Niacinamide serum that targets excess oil, reduces blemishes, and minimizes the appearance of pores for visibly clearer skin. 

Why it works: 10% Niacinamide regulates oil production and calms blemishes, while Hyaluronic Acid delivers lightweight hydration for balanced, clearer-looking skin.

How it feels: Lightweight and layers easily with skincare, spf and makeup.

When to use: Use AM/PM, after cleansing and applying your hydrator. Follow with moisturizer, and SPF in the AM.


This Duo contains x2 Niacinamide Serum (30ml)

Suitable for:

  • Sensitive skin
  • Pregnancy & breastfeeding

Targets:

  • Excess oil
  • Redness
  • Breakouts & blemishes

Awards & Features

  • Cosmopolitan Award
  • Popsugar feature
  • Glamour Feature

Shipping info

Standard tracked shipping

  • $5.95 or FREE on orders over $35. (2-5 business days*)

Express tracked shipping

  • $15 (2-3 business days*, when ordered before 3pm EST)

*Find out more about shipping here.

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4.6
Rated 4.6 out of 5 stars
Based on 774 reviews
Total 5 star reviews: 572 Total 4 star reviews: 130 Total 3 star reviews: 39 Total 2 star reviews: 11 Total 1 star reviews: 22
Reviews Summary
Customers say this serum has a lightweight, non-sticky texture that absorbs quickly into skin. Many users report it helps control oiliness, reduces redness, and minimizes the appearance of pores. Frequent comments address its effectiveness for breakouts and improving skin texture. Several customers mention using it consistently for years and becoming repeat purchasers. While most praise its gentle formula suitable for sensitive skin, some note it can feel tacky or cause irritation. A few users mention concerns about recent formula changes affecting smell and consistency.
774 reviews
  • Jessica K.
    Verified Buyer
    Reviewing
    10% Niacinamide Serum Duo
    I recommend this product
    Age Range 25 - 34
    Skin Type Combination
    Skin Concerns Breakouts, Dryness, Oiliness, Damaged Skin Barrier, Blackheads
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 3 months +
    Sensitive Skin Suitability Suitable for my sensitive skin
    Rated 5 out of 5 stars
    6 days ago
    Great.

    Feels nice to put on, not sticky. The tone of my skin really seemed to even out after a few uses. Works well under other products.

  • Lynn K.
    Verified Buyer
    Reviewing
    10% Niacinamide Serum
    I recommend this product
    Age Range 45 - 54
    Skin Type Combination
    Skin Concerns Breakouts, Blackheads, Oiliness, Dehydration, Dryness
    Have you purchased an INKEY List product before? No
    How long have you used this product for? 1 month - 3 months
    Sensitive Skin Suitability Suitable for my sensitive skin
    Rated 4 out of 5 stars
    1 week ago
    Helped minimise my pores

    This has really minimised my pores in my T zone and calmed my skin down. I still find niacinamides heavy on the skin but this is defo the best I have tried. First time I have actually seen results and in am in my 50's so I have tried a few! I use the Inkey Hyularonic as well and they go great together.

  • Alexandra F.
    Verified Buyer
    Reviewing
    10% Niacinamide Serum
    I recommend this product
    Age Range 35 - 44
    Skin Type Combination
    Skin Concerns Hyperpigmentation, Breakouts, Oiliness
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 3 months +
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    3 weeks ago
    Light weight and smoothing

    Perfect niacinamide serum, the texture is so fine and light weight. I immediately stopped breaking out when I added it again in my routine. I have repurchased multiple times and it's a staple for me. I love it.