Beauty Kate Middleton Reportedly Keeps Three Bottles of This Anti-Aging Face Oil on Her Nightstand — and Now It's on Sale “My skin is positively glowing, [and] my forehead lines are almost gone.” 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 October 22, 2021 @ 10:00PM 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 As phenomenal as the new Spencer movie looks to be, it's difficult to predict what actually goes down inside the royal households (which might be why fans are so eager to look on from the fringes. No judgement. I've watched a 10-second clip of Charlotte waiting to greet Kate Middleton as she dismounts from a helicopter). So the secrets of Middleton's beauty routine are a precious commodity — and for the next 72 hours, one of her confirmed skincare favorites is part of a rare sale. As People magazine reported in 2016, a bottle of Beuti Skincare's Beauty Sleep Elixir was hand-delivered to Middleton by a Kensington Palace insider. The brand is a small, woman-founded, independent British line, and per founder Leila Aalam, made such a fan in the royal that she reportedly kept three bottles of the stuff on her bedside table. "We were ecstatic to know that she liked it and was actually using it," Aalam told the outlet. According to shoppers, Middleton's not the only one who's seen persuasive results. The Sleep Elixir wins a 4.8 rating from over 400 reviewers on Credo's website, where it's marked down 20 percent for the store's annual Friends and Family sale. "Magic elixir in a bottle. As I creep into middle age, dullness and fine lines are greeting me in the mirror on a daily basis," wrote a customer of the results within two weeks. "My skin is positively glowing, [and] my forehead lines are almost gone, although they did start off fairly light. Skin texture overall is more glowy." Courtesy Shop now: $56 (Originally $70), discount applied at checkout; credo.com More reviewers add that the oil's effects are so addictive, they're on their second bottle — and like Middleton, they already have a backup on hand. Some note that they've seen wrinkles around their eyes diminish within the first week of use, and others said that it helps "tremendously" with dry skin and puffiness, especially around the eye area. Continued use pays off: As someone in the 55+ range wrote, after two years with the Elixir, they see a marked shift in their skin when they run out. "I really didn't expect this to do much, but I was very wrong," said a different person. "After about a week, I actually noticed that my fine lines and wrinkles were disappearing. In addition, I even had someone say that I was glowing. I haven't heard that for quite a while." Those results stem from the oil's luxurious formula. The Beuti Sleep Elixir includes a "super boost" of omegas 3, 5, 6, 7, and 9 to nourish skin and soften creases, along with 14 plant oils; those include camellia seed oil, chia seed oil, bitter cherry seed oil, strawberry seed oil, pomegranate seed oil, blueberry seed oil, cranberry seed oil, raspberry seed oil, sea buckthorn fruit oil, and sea whip extract. That mix makes for a plethora of antioxidants to tackle free radicals, soothe skin, and help regenerate cells — and might be why Middleton looks practically ageless (along with all the amenities that royal life provides). "Hands down, this face oil has transformed my skin," wrote a shopper with dry skin of the "life changing" product. "I literally wake up GLOWING. Pores look smaller, texture looks smoother, tone is more even, [and] I haven't had a single pimple, which I know some people fear with oils. I want to buy this for everyone I know." If you're in the mood to follow their and Middleton's leave, snag the Beuti Beauty Sleep Elixir for $56 until Credo's sale ends on Sunday.