Let me simply say: Niacinamide itself is not recognized to be irritating; in actual fact, most individuals discover it very tolerable, versus potent acids or retinol. Moderately, it is niacinamide overload that may pose issues, as you don’t want a super-high focus to reap its benefits. “Most niacinamide research use 2% to five% of the ingredient,” beauty chemists Victoria Fu and Gloria Lu beforehand wrote for mbg. “There is no motive to suppose 30% niacinamide is six instances as efficient as 5% niacinamide. You are extra prone to irritate your pores and skin with ultra-high concentrations than the rest.” Whereas the B vitamin is beloved for strengthening the pores and skin barrier, an excessive amount of of it will possibly really result in sensitivity, pores and skin irritation, and redness—however in case you persist with a 2 to five% focus, you have to be set.
Right here’s the place issues get difficult: Niacinamide has shortly change into the crown jewel of skincare, given its bundle of advantages (moisture! Oil management! Brightness!), and types are formulating with it at breakneck pace. “You would be getting increased percentages of niacinamide than you suppose you’re, as a result of it’s included in plenty of merchandise,” Landriscina explains.
It’s additionally probably the most easy-going actives on the market—it even pairs effectively with notoriously finicky vitamin C. “So manufacturers typically throw it into merchandise as an additional,” provides Landriscina. However that “further” hit of niacinamide can simply tip the scales from nourishing to irritating, particularly in case you’re piling on types of vitamin B3 with out even understanding it.