Mark your calendars because Amazon's hosting its fall Prime Day event on October 7 and October 8 - and the beauty deals are already making headlines. Early discounts are live right now, covering everything from celeb-loved skincare to TikTok-viral devices and everyday beauty necessities you'll use on repeat. It's basically a glow-up event before the holidays even begin. We combed through pages of markdowns and rounded up the 40 must-shop deals that truly deserve a spot in your cart. You'll spot the Martha Stewart-loved L'Oréal Lumi Glotion and Kyle Richards' go-to SPF on major discount.