Best Niacinamide Serum for Oily Skin UK
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Best Niacinamide Serum for Oily Skin UK
Looking for the best niacinamide serum for oily skin in the UK? The right formula can help improve the appearance of excess shine, visible pores and uneven skin tone while keeping your skin hydrated.
Niacinamide, also known as vitamin B3, has become a popular skincare ingredient for people with oily, combination and blemish-prone skin. But with so many different serums, concentrations and bottle sizes available, knowing which one to choose isn't always straightforward.
In this guide, we'll explain what makes a good niacinamide serum, what percentage to look for and why a lightweight, fragrance-free formula can be a useful addition to your daily skincare routine.
We'll also look at why Hollyberry Cosmetics' Niacinamide + Hyaluronic Acid Serum is an option worth considering if you want a UK-made serum in a generous 500ml bottle.
Quick Answer: What Is the Best Niacinamide Serum for Oily Skin?
The best niacinamide serum for oily skin is one that combines an appropriate concentration of niacinamide with a comfortable, non-greasy formula.
Look for a serum that:
- Contains niacinamide to help support the skin barrier and improve the appearance of excess oil.
- Provides hydration without leaving a heavy, greasy finish.
- Is fragrance-free if you prefer to avoid added fragrance.
- Fits comfortably into your morning or evening skincare routine.
- Offers good value for the quantity you purchase.
A higher percentage of niacinamide isn't automatically better. Some people prefer lower concentrations, particularly when introducing a new active ingredient.
Our pick for a simple, everyday option: Hollyberry Cosmetics Niacinamide + Hyaluronic Acid Serum 500ml, combining 1% niacinamide with hyaluronic acid.
Explore the range at Hollyberry Cosmetics.

Why Is Niacinamide Good for Oily Skin?
Oily skin produces sebum, the natural oil that helps protect and lubricate the skin. Sebum is essential for healthy skin, but excess oil can leave the face looking shiny and contribute to clogged pores.
Niacinamide is a versatile skincare ingredient that can help improve the appearance of oily skin without the need to strip away its natural moisture.
1. Helps improve the appearance of excess shine
Research suggests that topical niacinamide may help reduce sebum output in some people. Results depend on the formulation, concentration and individual skin.
2. Supports the skin's natural barrier
A healthy skin barrier helps retain moisture and protect against everyday environmental stressors. Niacinamide supports normal barrier function, making it useful for many different skin types.
3. Improves the appearance of uneven skin tone
With consistent use, niacinamide can help improve the appearance of uneven tone and make skin look more balanced.
4. Helps skin look smoother
Niacinamide may help improve overall skin texture and make enlarged pores appear less noticeable. It does not permanently shrink pores.
5. Works alongside hydrating ingredients
Oily skin can still be dehydrated. Pairing niacinamide with hyaluronic acid helps deliver hydration without relying on a heavy cream alone.
What Percentage of Niacinamide Is Best for Oily Skin?
One of the most common questions when shopping for a niacinamide serum is whether a higher percentage delivers better results.
You may see products advertised with 1%, 5%, 10% or even higher concentrations.
| Niacinamide strength | What to consider |
|---|---|
| 1% | A lower-strength option for those who prefer a gentle introduction |
| 2–5% | A range used in various skincare studies and formulations |
| 10% | A stronger option that may be less comfortable for some sensitive users |
| Above 10% | Not necessarily more effective and may increase irritation risk |
Hollyberry Cosmetics uses 1% niacinamide in its Niacinamide + Hyaluronic Acid Serum.
This makes it an option for people looking for a lower-concentration formula rather than automatically choosing a high-strength serum.
It's important to remember that the finished formulation matters just as much as the headline ingredient percentage. A 1% formula should not be expected to deliver the same results as formulations studied at higher concentrations.
Why Choose Niacinamide with Hyaluronic Acid?
Niacinamide and hyaluronic acid work in complementary ways.
Niacinamide helps support the skin barrier and improve overall skin appearance, while hyaluronic acid attracts and holds water to help the skin feel hydrated and look plumper.
Together, they can be useful for people who experience both oiliness and dehydration.
Benefits of combining the two ingredients
- Hydration without relying on a rich, heavy texture.
- Support for the skin's moisture barrier.
- A smoother, more comfortable skin feel.
- A straightforward addition to an existing skincare routine.
For people with oily skin, maintaining hydration is important. Using harsh cleansers or skipping moisturiser entirely can leave skin feeling tight and uncomfortable.
Why Fragrance-Free Niacinamide Serum Can Be a Good Choice
Fragrance is not essential for a serum to deliver skincare benefits.
Some people enjoy fragranced products, while others prefer to avoid added fragrance because their skin is sensitive or reactive.
A fragrance-free niacinamide serum can be particularly appealing if you:
- Have sensitive or easily irritated skin.
- Already use retinol or exfoliating acids.
- Prefer straightforward skincare formulations.
- Want to reduce the number of fragranced products in your routine.
- Fragrance-free does not mean irritation-free, so patch testing is still recommended.
Hollyberry Cosmetics Niacinamide + Hyaluronic Acid Serum 500ml
At Hollyberry Cosmetics, we believe effective skincare should be accessible without unnecessary complexity.
Our Niacinamide + Hyaluronic Acid Serum combines two popular skincare ingredients in a generous 500ml bottle, making it an appealing option for everyday skincare routines and professional users.
Why consider our serum?
UK-made skincare
We're a family-run British skincare business offering serums made in the UK.
1% niacinamide
Our lower-concentration formula is designed for people who prefer an everyday niacinamide serum without jumping straight to higher strengths.
With hyaluronic acid
Hyaluronic acid helps support hydration and leaves skin feeling more comfortable.
Fragrance-free
Our serum contains no added fragrance or essential oils.
Cruelty-free
We are committed to cruelty-free skincare.
Generous 500ml size
A larger bottle provides substantial product volume for regular use, rather than repeatedly purchasing small bottles.
Free UK shipping
Free UK shipping is available on our serums.
Shop Hollyberry Cosmetics skincare serums
Is a 500ml Niacinamide Serum Better Value?
Most facial serums are sold in bottles of approximately 30ml.
A 500ml bottle contains more than 16 times that amount.
| Bottle size | Equivalent volume |
|---|---|
| 30ml | Standard small serum bottle |
| 60ml | Two 30ml bottles |
| 500ml | Approximately 16.7 × 30ml bottles |
Buying a larger bottle can reduce the need for frequent reordering, although the actual saving depends on the price per millilitre.
For anyone using niacinamide regularly, bottle size is worth considering alongside the ingredients, formula and shelf life after opening.
Always follow the product's storage and period-after-opening instructions.
How to Use Niacinamide Serum for Oily Skin
Niacinamide is generally straightforward to incorporate into a skincare routine.
Morning routine
- Wash your face using a gentle cleanser.
- Apply a small amount of niacinamide serum to clean skin.
- Allow it to absorb.
- Follow with a suitable moisturiser.
- Finish with broad-spectrum SPF 30 or higher.
Evening routine
- Remove makeup and cleanse your skin.
- Apply your niacinamide serum.
- Follow with moisturiser.
Start gradually if your skin is sensitive or if you're using several active ingredients.
Can You Use Niacinamide Serum Every Day?
Many people use niacinamide daily because it is generally well tolerated.
However, individual reactions vary depending on the concentration, the finished formula and other products in your routine.
If you're trying niacinamide for the first time, begin with a small amount and monitor how your skin responds.
Discontinue use if persistent irritation develops.
Can Niacinamide Help Acne-Prone Skin?
Niacinamide may be a useful supporting ingredient in routines for blemish-prone skin because of its barrier-supporting and soothing properties.
However, a cosmetic niacinamide serum should not be presented as a treatment or cure for acne.
If you have persistent or severe acne, seek advice from a pharmacist, GP or dermatologist about appropriate treatment.
Niacinamide vs Salicylic Acid for Oily Skin
Both ingredients are popular with people who have oily skin, but they serve different purposes.
| Niacinamide | Salicylic acid |
|---|---|
| Supports the skin barrier | Exfoliates the skin |
| May improve the appearance of oiliness | Helps clear dead skin cells from pores |
| Can improve uneven-looking skin tone | Useful in routines targeting congestion |
| Often used daily, depending on formulation | Frequency depends on strength and tolerance |
Some people use both ingredients in a routine, but introducing multiple active products simultaneously may increase the risk of irritation.
Hollyberry Cosmetics also offers a Salicylic Acid + Hyaluronic Acid Serum for those exploring different skincare options.
What to Check Before Buying a Niacinamide Serum in the UK
Before purchasing, consider these five questions.
1. What percentage of niacinamide does it contain?
Choose a strength that matches your preferences and skin tolerance rather than assuming higher is always better.
2. Does it contain hydrating ingredients?
Ingredients such as hyaluronic acid can help support skin hydration.
3. Is it fragrance-free?
If you're sensitive to fragrance, check the full ingredient list.
4. Is the bottle size suitable?
A 30ml bottle may be convenient for occasional use, while a 500ml bottle may appeal to frequent users.
5. Is the product supplied by a reputable UK business?
Look for clear ingredient information, appropriate product labelling and accessible customer support.
Frequently Asked Questions
What is the best niacinamide serum for oily skin in the UK?
The best choice depends on your skin, preferred concentration and budget. Look for a comfortable, well-formulated product containing niacinamide, with added hydration if your skin also feels dehydrated.
Is 1% niacinamide enough for oily skin?
A 1% formula is a lower-strength option. It may suit people who prefer to start gently, although stronger concentrations have been used in more of the published research on sebum and other skin concerns.
Does niacinamide stop oily skin?
Niacinamide does not permanently stop natural oil production. Some formulations may help reduce excess sebum or improve the appearance of shine.
Can I use niacinamide and hyaluronic acid together?
Yes. They are commonly combined because niacinamide supports skin barrier function while hyaluronic acid helps provide hydration.
Is niacinamide suitable for mature oily skin?
Niacinamide can be suitable for mature skin that still experiences oiliness. It may help improve skin texture and support the moisture barrier.
Can I use niacinamide with retinol?
Many skincare routines include both ingredients. Introduce products gradually and follow the directions for your retinol product, particularly if your skin is sensitive.
Is a 500ml niacinamide serum worth buying?
It can be a convenient choice for regular users, provided the formula suits your skin and you can use it within the recommended period after opening.
Final Thoughts: Choosing the Best Niacinamide Serum for Oily Skin
The best niacinamide serum for oily skin isn't necessarily the most expensive product or the one with the highest percentage.
A good choice is one that suits your skin, provides comfortable hydration and fits into a routine you can maintain consistently.
For anyone looking for a UK-made, fragrance-free niacinamide serum with hyaluronic acid, Hollyberry Cosmetics offers a 500ml option with 1% niacinamide.
Explore our skincare range and discover simple, everyday serums designed for hydration and skin comfort.
