Beauty This Niacinamide Serum is Shoppers' "Best Kept Secret" For Fighting The Aging Process It treats dark spots and congested pores. By Taylor Lane Taylor Lane Instagram Taylor Lane is a Maryland-based freelance writer who covers all things beauty, fashion, and shopping. She was previously an Ecommerce writer for InStyle. InStyle's editorial guidelines Published on September 14, 2021 @ 07:00PM Pin Share Tweet Email We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation. Learn more. Photo: Courtesy/Getty Images Let's be honest for a second. There are a ton of anti-aging serums in the beauty space that all have their own set benefits and unique traits. Some work wonders, and some don't warrant a repeat buy. So what sets a serum apart from the pack? According to Amazon shoppers, it's the ingredient niacinamide. Naturium's Niacinamide Moisturizing Serum focuses on treating skin concerns that come along with signs of aging like wrinkles, fine lines, dullness, and dark spots. The refining formula contains a blend of niacinamide, zinc PCA, and hyaluronic acid. The niacinamide reduces dark spots and leaves the skin looking smoother overall, while zinc PCA simultaneously hydrates skin and decreases excess shine. Lastly, hyaluronic acid locks in moisture, making the skin look plumper and firmer. Courtesy Shop now: $16, amazon.com Thanks to its deeply hydrating benefits, this formula functions as both a serum and a lightweight moisturizer. The serum can also be used as a spot treatment for sun spots, or to relieve congested pores. Word of the niacinamide serum's multi-tasking abilities is quickly spreading among shoppers, with one calling it the "best-kept secret." One five-star reviewer wrote that the serum is "almost a miracle." They added: "I love, love, love good skin care products! This niacinamide serum is one of my favorites! It's a little thicker than some serums, but it glides on smoothly and absorbs nicely. And, for me, at least, niacinamide serum is almost a miracle!" This $14 Serum Combines Niacinamide and Retinol to "Drastically" Change Skin, According to Shoppers "Where have you been all my life?" another reviewer asked. "I started applying this at night after toner, and then I applied moisturizer, and wow! I can see immediate smoothing effects on my skin. It looks and feels better in the morning when I wake up, too, as it has calmed my inflamed bumps. It's amazing." A final customer explained that they purchased the serum to help fight the aging process. "I have melasma from sun damage and rosacea. I'm hoping this will help. It feels wonderful on the skin. So smooth and creamy." Ready to join the niacinamide club? Head to Amazon now and add Naturium's Niacinamide Moisturizing Serum to your cart now and experience smoother and firmer skin.