Daily Mail journalists select and curate the products that feature on our site. If you make a purchase via links on this page we will earn commission - learn moreM&S has given its own-brand skincare range a makeover thanks to the hottest wellness trend of the year: peptides.Peptides are short chains of amino acids (the building blocks of protein) that have become all the rage online, with proponents claiming it benefits everything from injury recovery, weight loss and hair growth.Celebrity fans range from Joe Rogan to Gwyneth Paltrow, but peptides' skin-brightening and tightening properties have been studied long before the ingredient exploded in popularity online.Peptides also sit at the heart of Formula's new science-backed collection, fronted by Emma Willis, that consists of an eye cream, day and night creams, as well as a non-greasy neck and decolletage cream that guarantees a 'tighter, lifted look' within four weeks.These collagen-stimulating peptides apparently leave the skin looking fresh, radiant, and smooth, with the range's hero product leading the way.Hailed as M&S Beauty's 'most advanced innovation yet', the Ultra Peptide serum is packed with peptides, niacinamide, omega three and six as well as ceramides.It also contains NAD+ Booster, meaning the £29 serum delivers seven skincare benefits - from smoothing fine lines and wrinkles, hydration and even texture to minimising pores - for a more radiant and revitalised look in four weeks. Strictly Come Dancing host Emma Willis, who was today unveiled as the new face of Formula, hailed the brand for engineering 'products that fit into real life'. Strictly host Emma Willis was unveiled as the new face of M&S's own-brand skincare range Formula 'What I love about this range is that it doesn't overcomplicate skincare,' said Emma. 'We've all heard the buzzwords, but most people just want to know what something does and whether it works. Formula's range, on the other hand, is 'skincare you don't need a PhD for', the broadcaster added. In addition to the 'hero' serum, Formula's Ultra Peptide collection includes a £20 eye cream, day and night moisturisers that retail for £27 each, as well as a £22 Neck & Decolletage cream. The brand has also introduced complementary 'science-backed' skincare products - including £12 micellar water and a cleansing balm to remove makeup and an exfoliating toner - with active ingredients like Vitamin C and hyaluronic acid. It comes after M&S's foray into gentle skincare for children earlier this year. The line, dubbed Fresh Elements, offers dermatologically-tested products costing no more than £12.50 each, designed specifically for teens and their fluctuating skin at a reasonable price point.The British retailer said: 'M&S is proud to unveil Fresh Elements, an innovative new line-up of skincare created specifically to meet the needs of young, delicate and changing skin.'Products are said to have simple ingredients with no strong actives or overwhelming ingredient lists.'The range champions age-appropriate skincare, with formulas that leave skin feeling balanced and looking healthier, helping build healthy habits from day one.'This newly developed line-up makes skincare feel fun, confidence-boosting and intuitive.'Each product is formulated to leave skin feeling balanced, comfortable and looking healthier - avoiding unnecessary complexity or strength while still delivering visible results.'The collection, which the brand hails as the 'perfect first skincare routine', offers a line-up of eight different products.