Niacinamide for Skin: Benefits, Evidence & How to Use 5% Niacinamide
Published: Lueur BeautéShare
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Niacinamide is one of the most widely used ingredients in modern skincare because it can support several visible skin concerns at once.
But that versatility is also why it is often overclaimed.
Niacinamide is not a universal cure for pores, oiliness, pigmentation, sensitivity and ageing. The useful question is: which benefits are well supported, which are formulation-dependent, and what can a 5% product realistically do?
What Is Niacinamide?
Niacinamide, also called nicotinamide, is a form of vitamin B3.
In skin biology it is linked to cellular energy metabolism through NAD and NADP coenzymes, and topical niacinamide has been studied for barrier function, pigmentation, visible signs of ageing and inflammatory skin concerns.
What Are the Best-Supported Benefits?
The strongest evidence does not come from one single “miracle effect”. It comes from several different areas of skin function.
1. Skin barrier support
Topical niacinamide has been shown to support epidermal barrier function, including reducing transepidermal water loss and improving moisture content in the outer skin layer.
Research has also linked niacinamide with increased ceramide synthesis, which helps explain why it can be useful in hydration-focused and barrier-supporting formulas.
2. Uneven-looking pigmentation
Niacinamide does not work by directly blocking tyrosinase in the same way as some other brightening ingredients.
Instead, laboratory and clinical research suggests that it can reduce the transfer of melanosomes from melanocytes to keratinocytes.
In one clinical study, 5% niacinamide moisturiser improved hyperpigmentation compared with vehicle, while another study using 2% niacinamide with sunscreen also showed improvement in facial pigmentation.
3. Visible signs of skin ageing
A 12-week double-blind, placebo-controlled split-face study using 5% niacinamide reported improvements in fine lines, wrinkles, hyperpigmented spots, red blotchiness, texture and sallowness compared with the control moisturiser.
That does not mean every 5% niacinamide product will produce identical results. Finished formula, vehicle, supporting ingredients and user consistency still matter.
Does Niacinamide Really “Shrink Pores”?
This claim needs more precision.
Niacinamide cannot physically remove pores or permanently shrink their anatomical size.
What it may do is improve the appearance of pores indirectly by supporting skin surface condition, hydration and, in some formulations, oil balance.
So “reduces the appearance of pores” is more accurate than “shrinks pores”.
Does Niacinamide Control Oil?
Some studies and reviews report an effect on sebum regulation, but this is more dependent on concentration, formula and skin type than marketing language often suggests.
It is therefore more accurate to say that niacinamide may help improve the appearance of oily or combination skin rather than claiming that it switches off sebum production “at the source”.
Is Niacinamide Good for Dark Spots?
Yes, there is meaningful evidence for pigmentation-related benefits.
However, dark spots are not all the same.
Post-inflammatory hyperpigmentation, sun-related pigmentation and melasma-like concerns can respond differently, and sunscreen remains important in any pigmentation-focused routine.
A systematic review of topical treatments for post-inflammatory hyperpigmentation included niacinamide among ingredients with high-quality supporting studies, while also noting strong evidence for retinoids, hydroxy acids and broad-spectrum sunscreen.
Read next: How to Fade Dark Spots Naturally: The Science Behind Kojic Acid
Is 5% Niacinamide a Good Concentration?
Five percent is one of the best-studied concentrations in cosmetic research.
Clinical studies at 5% have reported benefits for pigmentation and visible signs of ageing.
That does not mean 5% is the only effective concentration, and it does not mean higher percentages are automatically better.
Products with 10% or more niacinamide are common, but higher concentration does not guarantee proportionally better results and may be less comfortable for some users.
How Does the Lueur Beauté Niacinamide Gel Moisturiser Fit In?
Lueur Beauté Niacinamide Gel Moisturiser contains 5% Niacinamide.
It is designed mainly for:
- dark spots
- uneven-looking skin tone
- pigmented spots
- hydration
- a smoother-looking skin surface
The lightweight gel texture absorbs quickly and can be used under makeup.
The product is suitable for all skin types.
What Is Actually in the Formula?
The current INCI is relatively simple:
- Water
- Alcohol
- 5% Niacinamide
- Glycerin
- Cellulose Gum
- Algin
- Ginkgo Biloba Leaf Extract
- supporting formula ingredients
This is not a heavy barrier cream. It is better understood as a lightweight gel moisturiser with a targeted niacinamide function.
Does It Contain Alcohol?
Yes.
Alcohol is the second ingredient in the INCI.
That does not automatically make the product unsuitable, but it is relevant if your skin is very dry, reactive or already irritated.
If your skin barrier is currently stressed, a richer or more barrier-focused moisturiser may be more comfortable.
Is It Fragrance-Free?
No.
The formula contains Parfum/Fragrance and has a floral bloom aroma.
If your skin is fragrance-sensitive, that matters more than the fact that niacinamide itself is generally well tolerated.
Is It COSMOS Certified?
No COSMOS certification is stated for this product.
The current product information lists it as Vegan, Gluten Free, Nut Free and Allergen Label Free.
Can Niacinamide Be Used With Vitamin C?
Yes, in many routines.
The old rule that niacinamide and Vitamin C must never be combined is outdated.
The practical question is whether the specific formulas layer well and whether your skin tolerates the total routine.
Read next: Vitamin C in Skincare: Benefits, Forms & How to Use It
Can Niacinamide Be Used With Salicylic Acid?
Often yes.
Salicylic Acid and Niacinamide act differently, so there is no universal incompatibility.
However, if your routine contains several products aimed at oily or acne-prone skin, irritation may come from the overall combination rather than from a specific ingredient pairing.
Can Niacinamide Be Used With Retinol or Bakuchiol?
Often yes.
There is no general rule that requires Niacinamide to be separated from Retinol or Bakuchiol.
But if Retinol is already causing dryness or sensitivity, adding extra products should be done gradually so you can tell what your skin tolerates.
Does Niacinamide Cause Purging?
Niacinamide does not work primarily by accelerating exfoliation in the same way as retinoids or hydroxy acids.
So classic “purging” is not the expected response.
If breakouts start after introducing a niacinamide product, consider the full formula, irritation, occlusion and other changes in the routine rather than assuming the niacinamide is “bringing impurities out”.
How Long Does Niacinamide Take to Work?
There is no single timeline that applies to every concern.
Some controlled studies measured pigmentation changes after around four weeks, while ageing-related studies commonly evaluated results over 8–12 weeks.
Those research timelines should not be treated as guaranteed consumer results.
Is Niacinamide Suitable for Sensitive Skin?
Niacinamide itself is generally considered well tolerated.
But a product is more than one active ingredient.
For the Lueur Beauté Gel Moisturiser, the presence of Alcohol and Fragrance means very reactive skin should judge the complete formula, not only the 5% Niacinamide concentration.
How to Use the Niacinamide Gel Moisturiser
Apply to clean skin as your moisturiser step.
The 5% concentration is suitable for daily use according to the product information.
Its lightweight texture makes it particularly useful when you want hydration and tone-evening care without a rich cream.
Discover Niacinamide Gel Moisturiser
Frequently Asked Questions
Is 5% Niacinamide enough?
Yes. Five percent is a clinically studied concentration and does not need to be increased simply because higher-strength products exist.
Does Niacinamide shrink pores?
Not literally. It may improve their visible appearance, but pores do not permanently disappear or physically close.
Does Niacinamide fade dark spots?
Clinical evidence supports an improvement in uneven pigmentation, but results depend on the type of pigmentation and the complete routine.
Can Niacinamide replace a moisturiser?
Niacinamide itself is an active ingredient, not a moisturiser. A finished product such as the Lueur Beauté Niacinamide Gel Moisturiser can serve as the moisturiser step because the formula is designed that way.
Can I use Niacinamide every day?
Many niacinamide products are suitable for daily use, including this 5% Gel Moisturiser. Frequency should still be adjusted to skin tolerance.
Is Niacinamide safe during pregnancy?
Topical niacinamide is not a retinoid and is commonly used in cosmetics, but pregnancy-specific product decisions should still be discussed with a healthcare professional if you are unsure.
What the Evidence Really Says
Niacinamide deserves its reputation as a useful skincare ingredient, but not because it does everything.
The best-supported benefits are barrier support, improvement in uneven-looking pigmentation and some visible signs of ageing.
Claims around pore size and oil control should be framed more carefully, and results always depend on the complete formula rather than the active ingredient in isolation.
Sources & Further Reading
- Ong RR, Goh CF. Niacinamide: a review on dermal delivery strategies and clinical evidence. 2024.
- Bissett DL et al. Topical niacinamide reduces yellowing, wrinkling, red blotchiness, and hyperpigmented spots in aging facial skin.
- Hakozaki T et al. The effect of niacinamide on reducing cutaneous pigmentation and suppression of melanosome transfer.
- Gehring W. Nicotinic acid/niacinamide and the skin.