Ingredient · B Vitamin
Niacinamide (Vitamin B3)
INCI · Niacinamide
Related names and forms: Nicotinamide. This list does not indicate synonyms or exact ingredient matches.
Niacinamide is the cosmetic name for vitamin B3, also known as nicotinamide. Its water-soluble structure and stability across a broad pH range (approximately 5.0-7.0) make it a particularly practical ingredient in formulation chemistry. It can be incorporated into textures as varied as toners, essences, serums, gel creams and moisturisers; this ease of formulation explains its frequent appearance on ingredient lists in the Turkish market. It is not a "miracle" ingredient on its own, but a measured supporting component within the formula as a whole. Scientific literature has examined it in areas such as barrier function, sebum-regulating signals and the appearance of skin tone, but Klaris does not describe it as "definitely correcting" any of these concerns. We find it more consistent to assess the concentration in a niacinamide product, its formula context and its compatibility with your profile together. In hair care, niacinamide also appears in the context of the appearance of sebum balance at the roots and scalp barrier comfort; it is a common supporting ingredient in shampoos and scalp formulas.
i. Cosmetic Functions
Frequently Discussed Effects
The following headings summarise areas of effect frequently discussed in the literature; visible results in each area require regular use and a suitable formula.
Barrier-Supporting Signals
It is associated with mechanisms that contribute to the skin's moisture-retaining and protective barrier functions.
A More Even-Looking Tone
It is an active frequently studied for the appearance of even skin tone and radiance.
A Soothing Feel
It may be chosen for formulas that give extra attention to redness-prone, sensitive profiles.
Mechanism
What Happens Within the Skin?
The following points summarise mechanisms from dermocosmetic literature in plain English. Klaris presents them as background information to help readers understand the context, not as medical claims.
Step 1
Barrier Lipid Signalling
Niacinamide is associated with mechanisms that indirectly contribute to the production pathways of barrier lipids such as ceramides and free fatty acids in the stratum corneum. This is understood as a process that supports moisture retention and tolerance of external stimuli.
Step 2
NAD+ Coenzyme Precursor
Vitamin B3 is a building block of the NAD+/NADPH coenzyme system used in cellular energy and antioxidant defence pathways. Although topical application in cosmetic form does not directly affect this pathway, understanding the ingredient's biochemical background helps explain why moderate concentrations can be used.
Step 3
Modulation of Melanosome Transfer
In vitro studies suggest that niacinamide can slow the transfer of melanosomes (pigment packages) to keratinocytes. This mechanism is frequently cited in relation to the appearance of even tone; the size of the topical effect varies between individuals and with the formula context.
Step 4
Signalling Effects on Sebum Balance
Some research suggests that niacinamide can provide regulatory signals in sebum production mechanisms. This is one biochemical reason for its frequent use in products for shine-prone skin.
Step 5
Modulation of Inflammatory Pathways
Niacinamide is associated with regulatory effects in some pro-inflammatory cytokine pathways. This is one reason it is chosen for formulas that give extra attention to redness-prone, sensitive profiles.
ii. Role in the Formula
How Is It Read on a Label?
Niacinamide usually appears in formulas at moderate concentrations alongside other actives. Rather than acting as a standalone "star ingredient", it provides a foundation that works with the rest of the formula. Seeing niacinamide on a label is therefore not a quality signal in itself; considering the whole formula and the role of its concentration can provide a more contextual reading.
A Closer Look · pH, Stability, Synergy
Niacinamide is a relatively easy ingredient to work with in formulation. It remains stable at pH 5.0-7.0, covering the full skin-friendly pH window. Prolonged exposure to an acidic pH (pH < 4.0) can hydrolyse it to nicotinic acid, which may show up as temporary redness in some skin. A label indicating the pH window maintained in a well-formulated niacinamide product, for example around pH 6.0, can therefore be a quality signal. A common point of debate is the combination of niacinamide and L-ascorbic acid (pure vitamin C). Older formulation literature reported that the two could form a "nicotinic acid + dehydroascorbic acid complex", causing yellow discolouration. Current research and modern formulas indicate that this reaction is not a practical problem at room temperature and an appropriate pH, although care may be useful under heat or at very high concentrations. Klaris therefore reads the formula context instead of saying the combination "cannot be used". Niacinamide lends itself to working with other actives: it is frequently formulated with hyaluronic acid, panthenol, ceramides, peptides and even retinol. For sensitive profiles, gradual introduction, starting at a low concentration before establishing regular use, may support the adjustment process. Around 5% stands out as a generally comfortable concentration for most profiles; concentrations of 10% and above may lead to reports of temporary warmth or mild redness in some sensitive skin. As a delivery consideration, niacinamide has a low molecular weight and can cross the skin barrier, so it can be effective without special encapsulation technologies. This keeps formulation complexity down and makes it suitable for simpler formula designs.
Typical Concentration Range
2% - 10% (common in cosmetic formulas)
Ingredient Family
Vitamins
iii. Sensitivity Advisory
A Note on Extra Care in Context
At high concentrations of 15% and above, some sensitive skin may experience temporary warmth or mild redness. Moderate concentrations may be more comfortable for sensitive profiles.
A sensitivity advisory is not an instruction for use; where individual health circumstances, pregnancy or known sensitivities are involved, discussing the decision with your doctor may be a more contextual approach.
Common Misconceptions
Frequently Confused Points
Common Belief
Niacinamide and vitamin C must never be used together.
A More Contextual Reading
This widespread idea comes from laboratory observations made under heat and prolonged stress conditions in the 1960s. Current research and modern formulas show that the two can be used together at room temperature and an appropriate pH. Many current products contain both; what matters is whether the formula has passed stability testing.
Common Belief
The higher the niacinamide percentage, the more effective it is.
A More Contextual Reading
The literature considers 2-5% sufficient for most signals; concentrations of 10% and above do not have consistent scientific support for additional benefit. Moderate concentrations are generally more comfortable for sensitive profiles.
Common Belief
Niacinamide "dries out" skin or damages the barrier.
A More Contextual Reading
The literature positions niacinamide as a barrier-supporting ingredient. Its profile contributes to barrier-repair signals rather than creating barrier sensitivity. When dryness occurs, it is usually attributed to other components of the formula, such as alcohol, fragrance or high-concentration acids.
Scientific Basis
Sources and Their Scope
The following headings indicate areas of research; they are not citations of a specific publication or confirmation that every statement on this page has been verified. The links provided should be read with their individual scope in mind.
- International INCI / CosIng Database
- Dermocosmetic Research Publications
- Formulation Chemistry Guides
Source Links
- Database RecordPubChem · Niacinamide Ingredient Record (CID 936)
- ResearchBissett DL, Oblong JE, Berge CA (2005): Niacinamide and the Appearance of Mature Skin
- ResearchHakozaki T et al. (2002): Niacinamide and Melanosome Transfer
Database records provide ingredient identity and registration information; on their own, they do not establish the effect of a finished product or its suitability for a profile. Search links are not specific research papers.
iv. Related Ingredients
Ingredients Often Read Together
v. Vitamins Family
Other Ingredients in the Same Family
Explore ingredients in the same functional family to deepen your reading of formulas.
vi. Academy · Related Reading
For a Closer Look
6 Min Read
What Is Niacinamide, and How Does It Work on Your Skin?
The role of vitamin B3 in formulations and the profiles it may suit.
6 Min Read
An Ingredient Guide for Sensitive Skin
Ingredient families that may need extra care when skin is prone to irritation.
7 Min Read
Combining Actives: What Works Together, and What to Keep Apart
Do niacinamide and vitamin C cancel each other out? Retinol with acids, and morning and evening layering, explained without alarm.
7 Min Read
Product Order and Layering: How to Arrange Your Routine
Thin-to-thick layering, morning and evening routines, and waiting times: the reasoning, not a list to memorise.
6 Min Read
Vitamin C or Niacinamide? Or Both?
Their respective roles, choosing for your goals and a measured answer to whether they can be used together.
vii. Related Concern Guides
Guides That Include This Ingredient
Concern Guide
Reading Ingredients for Acne-Prone Skin
Concern Guide
Reading Ingredients for Sensitivity-Prone Skin
Concern Guide
Reading Ingredients for Dark Spot-Prone Skin
Concern Guide
Reading Ingredients for Visible Enlarged Pores
Concern Guide
Reading Ingredients for Blackhead- and Comedone-Prone Skin
Concern Guide
Reading Ingredients for Dull-Looking Skin
Concern Guide
Reading Ingredients for Scalp Sensitivity
Concern Guide
Reading Ingredients for Hair That Gets Oily Quickly
Concern Guide
Reading Ingredients for Visible Dandruff
Klaris · Example Analyses
How Does Niacinamide (Vitamin B3) Feature
in Your Products?
Explore product examples to see the ingredient list, general assessment and match score that changes with the example profile together.
Masked products and example profiles, not a personal analysis. Profile matching in the app is part of Klaris Premium. The app is currently available in Turkish. An English version is in preparation.