Niacinamide (Vitamin B3) is the overachiever your skin’s been waiting for. This multitasker helps shrink the look of pores, fade stubborn dark spots, balance oil, and reinforce your barrier — all with a calm, no-sting touch. It’s also a pro at easing redness and smoothing texture, which makes it a go-to for breakouts, blotchiness, and stressed-out skin. Shop PSA’s Niacinamide heroes to hit reset on clarity, calm, and control.