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 (288 Reviews)
€17,00 / 30ml
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

Have you tried?

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 288 reviews
Total 5 star reviews: 151 Total 4 star reviews: 76 Total 3 star reviews: 39 Total 2 star reviews: 12 Total 1 star reviews: 10
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.
288 reviews
  • Chamoosing K.
    Verified Reviewer
    I recommend this product
    Age Range 25 - 34
    Skin Type Combination
    Skin Concerns Acne Scars, Blackheads, Hyperpigmentation, Breakouts
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    3 hours ago
    Blemishes gone...

    Been using this serum for 2 weeks, all me blemishes are gone, will be repurchasing :)

  • Nazli M.
    Verified Buyer
    I recommend this product
    Age Range 45 - 54
    Skin Type Oily
    Skin Concerns Oiliness, Texture
    Sensitive Skin Friendly? Yes
    Rated 5 out of 5 stars
    1 month ago
    Definitely reduces excess oil

    I like this product. It does what it claims. I use it daily and will reorder. The only thing is after I apply this and then my lotion and then my sunscreen I notice a flakiness. I dont think it's do to this but my lotiin that has niacinamide and glutathione in it . I am not sure if applying all these ingredients is causing the crumbling of what I applied. It's not dry skin. Anyway I tried is without my lotion with just sunscreen on top and it works fine. Does not flake. I do need to blott on hot days but it keeps my skin looking less oily. I highly recommended it and will be purchasing it again.

  • emi
    Verified Buyer
    I do not recommend this product
    Age Range 45 - 54
    Skin Type Dry
    Skin Concerns Dryness, Fine Lines and Wrinkles, Hyperpigmentation
    Rated 2 out of 5 stars
    6 months ago
    Really wanted to like it

    Not seeing a big reduction in oil production on my nose compared with Inkey's regular Niacinamide, esp for almost twice the price. Am also seeing a white cast too on my fair skin with grittiness when it dries- am needing to shake the squeeze tube very well before applying but some days the cast is evident when dry.

    IE Profile picture for INKEY EU
    INKEY EU
    5 months ago

    Hello Emi,

    Thank you for taking the time to share your feedback about our Excess Oil Solution. We're truly sorry to hear that you haven't noticed a significant improvement in oil reduction compared to our original Niacinamide formula, and we understand your concerns about the value, especially given the price difference. We're also disappointed to hear about the white cast and texture issues you're experiencing. While shaking the product thoroughly before use can help with consistency, we understand this hasn't fully resolved the grittiness you're noticing. We would be grateful if you could reach out to our askINKEY Team who can support you further with your experience and help identify a more suitable solution for your oil control needs 🖤