Is Niacinamide natural?

Dominant commercial route is synthesis from petrochemical 3-methylpyridine (3-picoline) via 3-cyanopyridine hydrolysis. A microbial fermentation route exists but supplies a commercially negligible share.

The industrial synthesis of niacinamide, also known as nicotinamide, commonly begins with the oxidation of 3-methylpyridine (beta-picoline) to nicotinic acid. Beta-picoline itself is derived from petrochemical sources, often through reactions involving acetaldehyde and ammonia. The oxidation step can be carried out using various methods, including catalytic vapor-phase oxidation with air or oxygen over metal oxide catalysts (e.g., vanadium oxides) at elevated temperatures (typically 300-450°C). Alternatively, liquid-phase oxidation using strong oxidizing agents can be employed.

Following the formation of nicotinic acid, the next crucial step is the amidation to produce niacinamide. This is commonly achieved by reacting nicotinic acid with ammonia. A widely used industrial process involves the ammonolysis of nicotinic acid esters, or directly reacting nicotinic acid with ammonia at high temperatures and pressures, often in the presence of a catalyst. Another significant route is the catalytic ammoxidation of 3-methylpyridine, where beta-picoline is reacted with ammonia and oxygen in a single step to directly yield niacinamide. This process also occurs at high temperatures (300-450°C) over heterogeneous catalysts, such as vanadium-titanium oxides.

Regardless of the specific synthesis pathway, the crude niacinamide product requires rigorous purification to meet cosmetic and pharmaceutical standards. Purification typically involves steps such as crystallization, filtration, washing, and drying. Recrystallization from suitable solvents (like water or ethanol) is a common method to remove impurities and obtain high-purity niacinamide crystals. The final product is a white, crystalline powder that is highly soluble in water.

Niacinamide, also known as Vitamin B3, is a popular ingredient found in many skincare and haircare products. It's a versatile compound that offers a wide range of benefits for the skin, including improving its appearance by reducing the look of pores, uneven skin tone, fine lines, and dullness. It also helps to strengthen the skin's barrier, making it more resilient and better able to retain moisture, which can lead to a smoother and more hydrated complexion.

While niacinamide is a form of Vitamin B3, which is naturally present in foods like meat, fish, and grains, the niacinamide used in cosmetics is typically produced through a chemical synthesis process. This process starts with basic chemical building blocks derived from petroleum, not from plants or other natural sources. Therefore, according to the ISO 16128 standard for natural origin ingredients, cosmetic-grade niacinamide is classified as having zero natural origin content, meaning it's considered a synthetic ingredient.