BeautyAct - hydrationplease review for 5% Niacinamide Glass Serum

Great product. It's basically a niacinamide and hyaluronic acid serum in one. Also contains glycerin. So it's hydrating and also has all the benefits of niacinamide. The 5% concentration is just right. My skin has been irritated before by one of those high percentage niacinamide serums, but this one doesn't do that. I like it and my skin likes it. Nice pump bottle. I appreciate that the serum is fragrance free as well.