Excess Oil Solution with 20% Niacinamide

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Instructions on how to use 20% Niacinamide Serum

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20% Niacinamide Serum

20% Niacinamide Serum

Name: 20% Niacinamide Serum
Brand: The INKEY List UK
Price: 16.00 GBP
Availability: InStock
Rating: 4.2 (314 reviews)

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 (314 Reviews)

£16.00 / 30ml

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Worth 80 Points

What you get: A lightweight, non-sticky serum with 20% Niacinamide to help control oil, smooth texture, and visibly reduce the look of pores.

Why it works: 20% Niacinamide helps reduce oil and tighten the look of pores. Zinc PCA tackles sebum buildup. Squalane supports and protects the skin barrier.

How it feels: Lightweight, non-sticky and layers easily.

When to use: Use this niacinamide serum for oily skin AM and PM, after cleansing and applying your hydrator. Follow with moisturiser, and SPF in the AM.

Suitable for:

Oily skin
Pregnancy & breastfeeding

Targets:

Excess oil all over the face
Breakouts & blemishes
Enlarged pores

How to Use

Use in your AM and PM routine. After cleansing and hydrating, apply a pea-sized amount of this oil control serum to face and neck.

Follow with

Moisturiser

SPF in your AM routine.

INKEY Tip

Don’t mix with Vitamin C - alternate use on different days.

This is best for full-face oiliness and visible pores.

If you’ve got combo skin or just a shiny t-zone, try the 10% Niaciniamide Serum instead.

Heads up

When adding new products to your skincare routine, we always recommend patch testing. Learn more here.

Storage

Store in a cool, dry place (15–25 °C), away from direct sunlight. Avoid direct contact with eyes. For external use only. Keep out of reach of children.

Ingredients

20% Niacinamide: Our highest inclusion. Reduces the appearances of excess oil, blemishes and redness.
0.5% Zinc PCA: Targets bumps and texture caused by sebum build-up.
3% Squalane: Helps to protect the skin’s barrier.

Aqua (Water), Niacinamide, Butylene Glycol, Squalane, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Glycerin, Phenoxyethanol, Benzyl Alcohol, Ammonium Acryloyldimethyltaurate/VP Copolymer, Zinc PCA, Polysorbate 60, Ethylhexylglycerin, Dehydroacetic Acid, Sorbitan Isostearate, Trisodium Ethylenediamine Disuccinate.

Developed with Dermatologists

"As a dermatologoist I enjoyed giving my inpout on this particualr product because excess oil affects so many people, it can lead to clogged pores, enlarged pores, breakouts and even textural changes. This particular formulation includes Niacinmide at 20%, which is the highest possible inclusion of this ingredient and it will help to control excess oil, improve texture and reduce the apperance of pore size".

- Dr Adeline Kikam. Dermatologist & Doctor, @brownskinderm

Learn more about the SuperSolutions range

FAQs

CAN I USE THIS NIACINAMIDE FOR OILY SKIN IN THE AM OR PM? Both! It’s safe and effective morning and night.

CAN I USE IT LONG TERM? Yes.

HOW OFTEN SHOULD I USE IT? Daily use is ideal both AM/ PM. Consistency = results.

IS IT GOOD FOR DRY SKIN TOO? Yes! It helps balance oil production, making it great for both dry and oily skin types.

WHAT’S THE % OF NIACINAMIDE? 20%

CAN I LAYER IT? Layer with your usual skincare routine. Keep exfoliating products containing AHAs and BHAs in your PM routine.

CAN I USE THIS WITH RETINOL? We recommend using our lower % Niacinamide, 10% Niaciniamide Serum, with Retinol. If you're using Retinol at night, use this in the AM.

CAN I USE THIS WITH VITAMIN C? Yes - just alternate use.

PH LEVEL? 5-6

HOW LONG UNTIL I SEE RESULTS? Give it 4–6 weeks of consistent use. More isn’t always better - overuse can cause irritation.

WHY DOES IT LEAVE A WHITE FILM? You’re using too much. Use less and follow with your serum or moisturiser right away!

IS THIS SAFE FOR THOSE WHO ARE PREGNANT OR BREASTFEEDING? Yes.

IS IT VEGAN? Yes! Certified by The Vegan Society. No animal derivatives.

CAN I USE IT WITH PRESCRIPTION MEDICATION? Check with your doctor first.

We Give A Care

Skincare has become complicated. Too many ingredients, too many opinions, and too many products promising everything.

At The INKEY List, we believe you don't need more skincare, you need clarity you can trust. That's why we take the science and make it simple. We help people understand their skin, find the right ingredients, and build routines that deliver real results. Through innovative, science-backed formulas, we make effective skincare accessible to everyone. Because we care about great skincare for everyone.

Clear guidance. Proven ingredients. Real results.

Because at The INKEY List, We Give A Care.

Approved under the Cruelty Free International Leaping Bunny programme.

100% of our packaging is recyclable. Learn how to recycle your INKEY List products.

Certified by The Vegan Society

This product is;

Dermalogically tested

Clinically tested

Fragrance-free

Gluten-free

Pregnancy & Breastfeeding safe

Awards & Features

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.

Delivery info

Standard tracked delivery (Evri)

£3.99 or FREE on orders over £30. (2-5 working days*)

Express tracked delivery (Evri)

£5.95 or FREE on orders £50+. (Up to 2 working days if ordered before 8pm, excluding weekends*)

*Find out more about delivery options and delivery area restrictions here.

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Should I be using 20% Niacinamide?

Supersolution

Have you tried?

Supersolution

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.

£16.00 / 30ml

or

Have you tried?

10% 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 314 reviews

Total 5 star reviews: 170 Total 4 star reviews: 78 Total 3 star reviews: 41 Total 2 star reviews: 14 Total 1 star reviews: 11

Reviews Summary

Customers say this serum helps control excess oil throughout the day. Many notice reduced shine on their T-zone and longer-lasting makeup. While some experience immediate results, others report it takes a few weeks to see benefits. The texture absorbs quickly for most users, though some mention a white residue if not properly blended. Reviews indicate it works particularly well for very oily skin types. Several note improved skin texture and smaller-looking pores with continued use. The product layers well with other skincare items, though some prefer using it mainly in targeted areas.

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314 reviews

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Annemarie H.
Verified Buyer
Reviewing
20% Niacinamide Serum
I recommend this product
Age Range 45 - 54
Skin Type Combination
Skin Concerns Redness, Fine Lines and Wrinkles, Dryness
Have you purchased an INKEY List product before? Yes
How long have you used this product for? 1 month - 3 months
Sensitive Skin Friendly? Yes
Rated 5 out of 5 stars
1 week ago
So good
Love this product, first time user and its amazing,
Was this helpful?
Eva
Verified Buyer
Reviewing
20% Niacinamide Serum
I recommend this product
Age Range 25 - 34
Skin Type Combination
Skin Concerns Hyperpigmentation, Texture, Breakouts, Acne Scars, Oiliness
Have you purchased an INKEY List product before? Yes
How long have you used this product for? 1 month - 3 months
Sensitive Skin Friendly? Yes
Rated 5 out of 5 stars
3 months ago
My best friend
I’ve been struggling with active acne for the past year, tried hundreds of different products but all I did was worsen the problem. Till I find this product!! I was afraid cuz I’ve used niacinamide 10% from the 0rd1n4ry and I’ve got an allergic reaction so I was very scared at first but this product is a holy grail, it allows you to use it with other ingredients to treat other concerns so it’s perfect! And I didn’t get any allergic reaction this time even though the percentage is higher; itve been helping with my acne and oil production.
Was this helpful?
Neta L.
Verified Buyer
Reviewing
20% Niacinamide Serum
I recommend this product
Age Range 18 - 24
Skin Type Combination
Skin Concerns Breakouts, Hyperpigmentation, Acne Scars, Redness, Texture
How long have you used this product for? 1 month - 3 months
Sensitive Skin Friendly? Yes
Rated 5 out of 5 stars
4 months ago
Really good serum
Feels really nice on the skin
Was this helpful?

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20% Niacinamide Serum

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How to Use

Ingredients

Developed with Dermatologists

FAQs