Beauty This Celebrity-Approved Skincare Brand's Serum Gives Shoppers "Teenager-Beautiful Skin" And it’s 40 percent off. By Rachel Nussbaum Rachel Nussbaum Instagram Twitter Rachel is a journalist, writer, and editor who specializes in the beauty and wellness industry, writing about the best, safest products the industry has to offer for InStyle, Byrdie, and Shape. InStyle's editorial guidelines Published on March 9, 2022 @ 11:00PM Pin Share Tweet Email We independently research, test, review, and recommend the best products—learn more about our process. If you buy something through our links, we may earn a commission. Photo: Getty Images There's nothing like a ridiculously good deal to sweeten a Wednesday, especially when it's from a skincare brand that counts Eva Mendes, Demi Moore, Kate Hudson, and Kirsten Dunst as fans. That's right: Several of Kate Somerville's excellent products are 40 percent off at Nordstrom right now, including a face serum shoppers say "truly firms" their skin and leaves it "tighter and younger looking." While the Kx Active Concentrates Bio-Mimicking Peptides Serum normally goes for just under $100, the sale takes the price down to $59 — and going by devotees who dub it the "best serum in the world" and a "must-have staple," it's well-worth the price. Numerous Nordstrom reviewers wrote that they're astounded by the smoothing effect on fine lines and wrinkles; as one person commented, they "couldn't believe" how quickly it delivered results. As the name implies, the serum uses five collagen-strengthening peptides to counter sagging skin in a base of moisturizing glycerin and panthenol. Pulp extracts from mango and yellow mombin provide polyphenols and antioxidants, and some brightening action comes from banana pulp extract, while chicory leaf extract supports skin barrier function and zinc PCA demonstrates promise for enhancing collagen production. Courtesy Shop now: $59 (Originally $98); nordstrom.com, amazon.com, and dermstore.com The blend explains why users feel a "dramatic change" in the texture of their skin, and see "deep forehead wrinkles" quickly dissipate. Best of all, one person relayed that it took only a tiny amount of the fluid for them to see results — meaning they could make their bottle of "magic elixir" last longer. The benefits extend to making pores look smaller, according to another lover of the serum, and it made their foundation look better than ever before. Shoppers at Sephora, where the serum is currently sold out, echo the praise: "I still can't believe the difference in my skin, and I noticed results, literally, in two days," said a 66-year-old. "It's smoother, [my] sun damage is healing (at least, as long as I use it), and my skin has a glow." A last person added, "Most products are underwhelming, but this serum is magical! It gives me dewy, teenager-beautiful skin — and I'm 42 years old. It has immediate benefits, and they keep getting better and better." Interested? Snap up the Kate Somerville Kx Active Concentrates Bio-Mimicking Peptides Serum while it's on sale at Nordstrom.