Nicotinic Acid Best Antioxidant Anti-Ageing Pore Minimiser Soothing Nicotinic Acid description Nicotinic acid is one of two types of vitamin B3, the other being niacinamide. Like niacinamide, it is an anti-ageing ingredient with potent antioxidant benefits. Related ingredients: Niacin Niacinamide Nicotinamide Vitamin B3