Niacinamide (Vitamin PP): A Complete Guide | Effectiveness, Safety Quick Facts Efficacy: ★★★★☆ Safety: ★★★★★ Value for money: ★★★★☆ Ricerca Scientifica: ★★★★☆ Scientific research: All types, ideal for sensitive and oily Type: Amide form of vitamin B3 (nicotinic acid)... antioxidants niacinamide Dec 8, 2025 Dictionary of Cosmetic Ingredients