Niacinamide is one of the most extensively studied and widely used ingredients in modern skincare, valued for its versatility and comparatively high tolerability. The Ordinary Niacinamide 10% + Zinc 1% is among the most commonly used niacinamide serums in Australia, particularly for individuals managing oily skin, acne, or visible pore concerns. This review examines the formulation from an evidence-based perspective, focusing on concentration, mechanism of action, tolerability, and appropriate long-term use.
Unlike single-target actives, niacinamide influences multiple biological processes within the skin, including barrier function, inflammation regulation, and sebum activity. These broad effects contribute to its popularity but also create variability in individual response, particularly at higher concentrations. Understanding how niacinamide works, and how formulation strength influences outcomes, is essential when evaluating products such as this.
This article is intended for educational purposes only. Individual responses to niacinamide vary based on skin type, barrier status, and overall routine composition.
What Is Niacinamide?
Niacinamide, also known as nicotinamide, is a water-soluble form of vitamin B3. In skincare, it is recognised for its role in supporting epidermal barrier function, reducing inflammation, and influencing sebum production. Unlike exfoliating acids or retinoids, niacinamide does not increase cell turnover directly.
At a cellular level, niacinamide contributes to the synthesis of ceramides and other lipids essential for maintaining the skin barrier. Improved barrier function may reduce transepidermal water loss and increase tolerance to environmental stressors.
Niacinamide also exhibits anti-inflammatory properties, which can be relevant for acne-prone or redness-prone skin, though effects are typically modest and gradual.
Formulation Overview: The Ordinary Niacinamide 10% + Zinc 1%
The Ordinary Niacinamide serum combines a relatively high concentration of niacinamide (10%) with zinc PCA (1%). Zinc PCA is included for its potential role in regulating sebum production and supporting antimicrobial balance on the skin surface.
The formulation is water-based and lightweight, designed to absorb quickly without heavy emollients or occlusives. This texture may be appealing to oily or acne-prone skin types but can feel insufficiently supportive for drier or compromised barriers.
While niacinamide is generally well tolerated at lower concentrations, higher percentages increase the likelihood of irritation, flushing, or breakouts in some individuals.
Effects on Sebum, Acne, and Texture
Research suggests that niacinamide can reduce sebum production when used consistently, which may contribute to decreased surface oiliness over time. This effect is gradual and typically subtle rather than dramatic.
For acne-prone skin, niacinamide may support improvement indirectly by reducing inflammation and supporting barrier stability. However, it does not directly target follicular obstruction or bacterial proliferation in the same way as exfoliating acids or prescription treatments.
Perceived improvements in pore appearance are common but should be interpreted carefully. Niacinamide does not alter pore size but may reduce the appearance of pores by improving texture and oil distribution.
Barrier Function and Skin Tolerance
One of niacinamide’s most consistently supported benefits is its role in barrier support. By increasing ceramide synthesis, niacinamide may improve resilience against irritants and reduce water loss over time.
However, barrier benefits are concentration-dependent. While low to moderate concentrations are generally supportive, higher concentrations may provoke irritation in susceptible individuals, particularly when combined with other active ingredients.
Symptoms of intolerance can include redness, stinging, breakouts, or a sensation of warmth shortly after application.
Suitability for Different Skin Types
Oily and combination skin types may benefit most from this formulation due to its lightweight texture and potential oil-regulating effects. In these contexts, niacinamide may support overall skin balance when used appropriately.
For dry or sensitive skin, the 10% concentration may be excessive. Lower-strength niacinamide products or formulations combined with barrier-supportive ingredients may be better tolerated.
Acne-prone individuals should be aware that breakouts associated with niacinamide are often related to irritation rather than comedogenicity.
Use Within a Skincare Routine
The Ordinary Niacinamide serum is typically applied after cleansing and before heavier serums or moisturisers. Introducing the product gradually, such as every second day, may reduce irritation risk.
Combining high-strength niacinamide with multiple other actives may increase sensitivity. Simplifying the routine during introduction can help isolate tolerance issues.
Daily sunscreen use remains essential, particularly when niacinamide is used alongside exfoliating or photosensitising ingredients.
Limitations and Realistic Expectations
Niacinamide is not a fast-acting treatment. Improvements in oil regulation, texture, or redness typically occur over several weeks of consistent use.
The product does not treat hormonal acne, cystic acne, or significant pigmentation disorders on its own. Its role is supportive rather than corrective.
Expectations should align with niacinamide’s biological function rather than marketing claims.
Where to Buy
Sephora | Mecca | Chemist Warehouse | Amazon
Final Perspective
The Ordinary Niacinamide 10% + Zinc 1% offers a concentrated approach to a well-researched ingredient, with potential benefits for oil regulation and barrier support when used appropriately. Its suitability depends heavily on individual tolerance and routine context. For Australians seeking an affordable, evidence-aligned niacinamide option, it may be useful when approached conservatively and with realistic expectations.