But there are ways to use vitamin C and niacinamide together without experiencing side effects. Vitamin C, also known as ascorbic acid, is a powerful antioxidant essential for various bodily ...

Since retinol has a reputation for being drying and irritating and niacinamide can be extremely calming, using the later can ...

Check, check, and check. "Niacinamide nourishes and calms redness and inflammation with no side effects. It has similar effects of retinol by strengthening the skin barrier, [and] fortifies [skin ...