Niacinamide combats the visual effects of ageing on several fronts: it improves skin barrier function through proven mechanisms such as reducing transepidermal water loss (TEWL); positively impacts skin conditions by decreasing the appearance of redness, making it an excellent option for strengthening sensitive skin; enhances skin appearance and texture by stimulating collagen synthesis; and provides a "warming effect" by boosting microcirculation through increasing blood flow. Niacinamide can also reduce pigmentation and acts as a soothing agent. In short, niacinamide can increase skin elasticity, enhance skin hydration, improve the skin barrier and reduce pore size.