20% Niacinamide Serum
How to layer Excess Oil Solution in your routine
Key claim from clinical study of using 20% Niacinamide serum
Before & After of using 20% Niacinamide Serum
Excess Oil Solution tube and outer packaging on a black shelf against blue gradient with white goop

20% Niacinamide Serum | The INKEY List

20% Niacinamide to help balance excess oil, improve skin texture and reduce the appearance of pore size.

4.2
Rated 4.2 out of 5 stars
4.2 Stars (294 Reviews)
€17,00 / 30ml

Buy 2 get one FREE! Use code 3FOR2

A lightweight, non-sticky serum formulated with 20% Niacinamide to balance excess oil, improve skin texture and decrease the appearance of enlarged pores.

Created in partnership with dermatologists, this formula contains our highest % of Niacinamide, which helps reduce excess oil production throughout the day and effectively tighten the look of enlarged pores. Other key ingredients include; Zinc PCA which targets sebum build up and Squalane to protect the skin's barrier.

Suitable for:

  • Oily Skin
  • Pregnancy & Breastfeeding

Targets:

  • Excess Oil All Over The Face
  • Breakouts & Blemishes
  • Enlarged Pores

Proud to be:

  • Carbon Net-Zero
  • B-Corp
  • Cruelty Free
  • Recyclable
  • Vegan
  • Clinically Tested
  • Dermatologically Tested
  • Travel Size
  • Gluten Free
  • Fragrance Free
  • Clinically proven to control oil for 8 hours.*

    *DISCLAIMER: Independent clinical study of 20 people.

  • Immediately reduces excess oil by up to 60%.*

    *DISCLAIMER: Independent clinical study of 20 people.

  • 92% agree pores look and feel smoother after 3 days.*

    *DISCLAIMER: 4 week independent consumer trial of 50 people with oily skin.

  • 91% agree the serum improved the texture and evenness of their skin after 3 days.*

    *DISCLAIMER: 4 week independent consumer trial of 50 people with oily skin.

  • 92% agree skin feels fresh, balanced and less shiny after 3 days.*

    *DISCLAIMER: 4 week independent consumer trial of 50 people with oily skin.

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.

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SHOULD I BE USING EXCESS OIL SOLUTION?

Supersolution

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Supersolution

20% Niacinamide Serum

20% Niacinamide Serum

20% Niacinamide Serum

Suitable for...

People who have excess oil, all over the face rather than just in the t-zone, causing oil-related concerns such as enlarged, visible pores and textured skin​.

€17,00 / 30ml

or

Have you tried?

Niacinamide Serum

Niacinamide Serum

Suitable for...

People who have combination skin or t-zone oiliness, or do not have active acne or breakouts.

€10,00 / 30ml

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4.2
Rated 4.2 out of 5 stars
Based on 294 reviews
Total 5 star reviews: 156 Total 4 star reviews: 76 Total 3 star reviews: 39 Total 2 star reviews: 12 Total 1 star reviews: 11
Reviews Summary
Customers say this serum helps control oil throughout the day, particularly in the T-zone area. Many reviews mention reduced shine and longer-lasting makeup. While some note visible results within weeks, others report mixed experiences with oil control. Common feedback includes a white residue that can appear if not carefully applied. The texture feels lightweight and absorbs quickly for most users. Some mention the packaging could be improved, with product sometimes leaking or being difficult to dispense. Reviews are mixed on pore appearance, with some reporting noticeable improvements while others see minimal change.
294 reviews
  • Alexia G.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    8 hours ago
    This is phase 1 of my miracle anti wrinkle trio

    I bought this on secret sale, just to try it or give to my teenage sons, it is not the kind of product my skin normally needs because I don't have oily skin. I also bought two more products just to try them since they were very cheep during the sale, I bought the 1% RETINOL SERUM and the 10% UREA MOISTURIZER. And then I decided to use all three as my evening routine. And that is how I discovered the best trio for wrinkles and bright skin, for mture skins. The next morning my face looks amazing!

  • sophie h.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 days ago
    Great

    Use this every evening and has definitely improved my oily skin

  • Kooshul C.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5 days ago
    No blemishes

    Good serum with high percentage of niacinamide, fades dark spots and blemishes.