Niacinamide Serum
Niacinamide Serum
Product Description
Product overview
A lightweight, fast-absorbing niacinamide booster serum with hyaluronic acid, zinc PCA, and panthenol (pro-vitamin B5) designed to calm imperfections, reduce pore appearance, regulate sebum, and brighten uneven skin tone — all for under $5.
Niacinamide + Zinc PCA Duo
Vitamin B3 teams with zinc to regulate oil production, minimize pore appearance, and calm breakout-prone skin.
Texture & feel
SENSORYNiacinamide + Zinc PCA Duo
Vitamin B3 teams with zinc to regulate oil production, minimize pore appearance, and calm breakout-prone skin.
Hyaluronic Acid Hydration
Sodium hyaluronate draws moisture into the skin, helping to plump and hydrate without heaviness or greasiness.
Barrier Support with Panthenol
Pro-vitamin B5 soothes irritation, strengthens the skin barrier, and promotes healing for a calmer complexion.
Ultra-Clean 14-Ingredient Formula
No fragrance, no oils, no parabens, no silicones, no sulfates — just effective, minimal ingredients at a budget price.
Safety & compatibility
SAFEContains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. All ingredients are considered safe during pregnancy and breastfeeding.
Free from ferments, fatty acids, esters, polysorbates, and oils that feed malassezia yeast. Verified fungal acne safe by SkinSort.
Oil-free, silicone-free formula with no known pore-clogging ingredients. Very unlikely to cause breakouts.
Fragrance-free, allergen-free, and free from harsh alcohols. Gentle enough for reactive and easily irritated skin types.
Niacinamide works well with retinol, vitamin C, AHAs, and BHAs. Safe to layer in both morning and evening routines.
Contains propylene glycol, which can occasionally cause irritation in individuals with very sensitive skin or eczema. Patch test if concerned.
Ingredient breakdown
INGREDIENTSNiacinamide (Vitamin B3) ~5-10%Proven
A multitasking powerhouse form of vitamin B3 that strengthens the skin barrier, regulates sebum, reduces pore appearance, fades dark spots, and improves signs of aging. Gentle and well-tolerated by most skin types.
- Sebum Control: Studies show 2% niacinamide reduces sebum production within 2–4 weeks of daily use.
- Hyperpigmentation: 5% niacinamide significantly reduces dark spots and uneven skin tone over 8–12 weeks.
- Barrier Repair: Boosts ceramide and fatty acid production in the skin, strengthening the moisture barrier.
- Anti-Aging: Stimulates collagen production and reduces the appearance of fine lines over time.
Zinc PCA ~1%Proven
A zinc salt (pyrrolidone carboxylic acid) that helps reduce sebum overproduction, calm redness, and support the healing process. Especially beneficial for oily and acne-prone skin.
- Oil Control: Clinical studies show zinc PCA reduces sebum excretion rate by up to 52% after 28 days.
- Anti-Inflammatory: Helps reduce redness and inflammation associated with acne breakouts.
- Antimicrobial: Mild antibacterial properties help keep acne-causing bacteria in check.
Sodium Hyaluronate <1%Proven
A low-molecular-weight form of hyaluronic acid that penetrates deeper into the skin to deliver hydration from within. Can hold up to 1,000 times its weight in water.
- Deep Hydration: Sodium hyaluronate's smaller molecular size allows better penetration than hyaluronic acid.
- Plumping: Draws moisture into the skin, temporarily plumping fine lines and dehydration lines.
Panthenol (Pro-Vitamin B5) <1%Proven
A humectant and skin-soothing agent that converts to vitamin B5 in the skin. Helps the skin attract and hold moisture while promoting wound healing and reducing irritation.
- Barrier Support: Promotes lipid synthesis to strengthen the skin's natural moisture barrier.
- Soothing: Clinically shown to reduce redness and irritation in compromised skin.
Glycerin ~3-5%Proven
A naturally occurring humectant found in your skin. A 2016 study found glycerin to be more effective as a moisturizer than AHAs and hyaluronic acid. Draws water into the skin and prevents transepidermal water loss.
- Superior Humectant: Attracts water from the environment and deeper skin layers to keep the surface hydrated.
- Skin-Identical: Already present in human skin, making it exceptionally well-tolerated.
14 ingredients
Water, Niacinamide, Propylene Glycol, Glycerin, 1,2-Hexanediol, Propanediol, PEG-20, Zinc PCA, Phenoxyethanol, Sodium Hyaluronate, Xanthan Gum, Trisodium Ethylenediamine Disuccinate, Panthenol, Citric Acid
Where it fits in your routine
ROUTINEUse AM and/or PM. Apply to slightly damp skin after cleansing for best absorption. Can be mixed with your moisturizer for a simplified routine.
How to use
HOW TO USECleanse Your Face
Start with a gentle cleanser to remove dirt, oil, and makeup. Pat your face dry but leave skin slightly damp.
Apply 3–4 Drops
Using the dropper, dispense 3–4 drops of serum onto your fingertips or directly onto your face.
Gently Press & Pat
Press the serum into your skin using gentle patting motions. Focus on areas with visible pores, oiliness, or uneven tone.
Follow with Moisturizer
Once absorbed (15–30 seconds), layer your moisturizer on top. In the morning, always finish with SPF.
Who is it for?
WHOPerfect for you if:
- You want to control excess oil and shine throughout the day
- You have enlarged or visible pores you want to minimize
- You struggle with uneven skin tone or post-acne dark spots
- You need a budget-friendly niacinamide serum under $5
- You prefer a minimal, fragrance-free, clean formula
- You are pregnant or breastfeeding and need safe actives
- You deal with fungal acne and need a malassezia-safe serum
Consider alternatives if:
- You need intense hydration for very dry or dehydrated skin
- You want a higher concentration of niacinamide (e.g. 10%+)
- You prefer a more luxurious, spa-like sensory experience
- You are sensitive to propylene glycol
- You want additional active ingredients like ceramides or peptides
Skin type compatibility
SKIN TYPESNiacinamide + Zinc PCA actively regulate sebum production. Lightweight, oil-free formula absorbs instantly without adding shine.
Balances oily T-zone while hydrating drier cheek areas. Non-greasy formula works well across different facial zones.
Non-comedogenic, fungal acne safe, oil-free. Zinc PCA provides antimicrobial benefits and helps calm active breakouts.
Fragrance-free and allergen-free formula is gentle for most. Patch test recommended if you are reactive to propylene glycol.
Provides light hydration via glycerin and hyaluronic acid, but dry skin will need a richer moisturizer on top for adequate moisture.
A great everyday maintenance serum that keeps skin clear, balanced, and bright without overcomplicating your routine.
Results timeline
WEEK 10–12Smoother Texture & Less Oiliness
Skin feels smoother to the touch. Noticeable reduction in excess oil and midday shine. The lightweight formula layers well under moisturizer and makeup.
65% noticed smoother skinPores Appear Smaller
Visible pores begin to look tighter and less pronounced, especially on the nose and cheeks. Skin tone starts to look more even and balanced.
55% noticed pore refinementBrighter, More Even Skin Tone
Dark spots and post-acne marks begin to fade. Overall complexion looks brighter and more radiant. Skin barrier feels stronger with fewer breakouts.
70% noticed brighter complexionSustained Clarity & Glow
Continued improvement in dark spots, pore size, and oil balance. Skin looks healthier overall with a naturally balanced, clearer complexion.
75% reported clearer skin overallRatings by platform
52+ REVIEWSPros & cons
BALANCEDPraised
- Unbeatable price point at $4.50 for a niacinamide serum
- Ultra-clean, minimal 14-ingredient formula
- Fungal acne safe and pregnancy safe
- Fragrance-free, oil-free, paraben-free, silicone-free
- Leaping Bunny certified cruelty-free and vegan
- Lightweight and fast-absorbing, layers beautifully
- Niacinamide + Zinc PCA combo is great for oily/acne skin
- Includes bonus hydrators: hyaluronic acid, glycerin, panthenol
Criticized
- Small 30ml size runs out in about 4–6 weeks of daily use
- Not hydrating enough for dry skin when used alone
- Exact niacinamide percentage is not disclosed on packaging
- Only available in-store at Primark (no online purchase option)
- Basic packaging and dropper could feel less premium
- Contains propylene glycol which may irritate very sensitive skin
Budget-friendly alternatives (dupes)
DUPESHigher niacinamide concentration (10%) with zinc PCA. More widely available online and in stores. Slightly more viscous texture. Also fungal acne safe and fragrance-free, with only 11 ingredients.
Another affordable niacinamide + zinc option with a stated 10% concentration. Available online. Slightly more ingredients but still a clean formula. Good alternative if Primark is not accessible.
Contains 4% niacinamide plus ceramides and hyaluronic acid. A moisturizer rather than a serum, so it combines two steps. More hydrating for dry skin but heavier in texture. Widely available at drugstores.
Higher concentrations of both niacinamide and zinc with added squalane. Richer formula suited for normal to dry skin. More premium pricing but available at Target and online.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. No refrigeration required.
Glass dropper bottle with pipette dispenser for precise application
Yes — 30ml is under the 100ml carry-on liquid limit
Frequently asked questions
FAQYes. This serum contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens — the main ingredients of concern during pregnancy and breastfeeding. Niacinamide, glycerin, hyaluronic acid, zinc PCA, and panthenol are all considered safe for use during pregnancy and while nursing. Always consult your healthcare provider if you have specific concerns.
Yes. This serum is verified fungal acne (malassezia) safe by SkinSort. It contains no ferments, fatty acids, esters, polysorbates, or oils that feed malassezia yeast. The oil-free, fragrance-free formula makes it an excellent choice for those prone to fungal acne.
Yes. Niacinamide is one of the most versatile and compatible actives in skincare. It pairs well with retinol (helps offset dryness and irritation), vitamin C (complementary brightening benefits), AHAs like glycolic acid, and BHAs like salicylic acid. You can layer them in the same routine or alternate AM/PM for best results.
This serum works best for oily, combination, and acne-prone skin types due to its oil-regulating niacinamide and zinc PCA combination. It is also suitable for normal and sensitive skin (fragrance-free and gentle). Dry skin types can use it but should pair with a richer moisturizer since the formula is lightweight.
Most users report smoother skin texture and reduced oiliness within 1–2 weeks. Visible pore refinement typically occurs around weeks 3–4. For dark spots and uneven skin tone, expect gradual improvement over 6–12 weeks of consistent daily use. Results compound over time with continued application.
Apply after cleansing (and toner if you use one), before moisturizer. The general rule is thinnest to thickest consistency. This watery serum should go on before any heavier creams or oils. Use in both AM and PM routines. In the morning, always follow with sunscreen as the final step.
No, this serum has a comedogenic rating of 1 out of 5, making it very unlikely to clog pores. It is oil-free, silicone-free, and contains no known comedogenic ingredients. Both niacinamide and zinc PCA are actually known to help minimize pore appearance and reduce oil production, making this a great choice for acne-prone skin.
The serum has a Period After Opening (PAO) of 12 months. With daily use of 3–4 drops AM and PM, the 30ml bottle typically lasts about 4–6 weeks. Store in a cool, dry place away from direct sunlight to maintain potency. If the color, smell, or texture changes, discontinue use.
Verdict: The Primark Niacinamide Serum delivers remarkable value at just $4.50. With a clean 14-ingredient formula featuring niacinamide, zinc PCA, hyaluronic acid, and panthenol, it effectively targets oiliness, enlarged pores, and uneven skin tone without any unnecessary irritants. It checks every safety box — pregnancy safe, fungal acne safe, fragrance-free, and cruelty-free (Leaping Bunny). The main downsides are the undisclosed niacinamide percentage and the fact it is only available in-store at Primark. If you can get your hands on it, this is one of the best budget niacinamide serums on the market.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 1 |
Niacinamide
Skin Conditioning, Hair Conditioning, Smoothing
|
Promotes Wound Healing
Redness
Irritation
Dark Spots
Pores
|
|
| 3 |
Propylene Glycol
Solvent, Skin Conditioning, Fragrance, Humectant, Viscosity Controlling, Viscosity Decreasing Agent, Skin-Conditioningagent - Miscellaneous
|
Hydrating
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|
|
| 1 |
1,2-Hexanediol
Solvent, Skin Conditioning
|
Hydrating
|








