For some, shopping at Sephora will never get old. With so many beauty products available in stores and online, the popular retailer makes it easy to always find something new to try. Yet if you don't want to bank your money on just any random item, Sephora keeps a running list of its best-sellers. INSIDER recently took a peek, and it appears that last month's top picks included: a $40 face oil that zaps pimples, a $18 face primer that smooths pores, and a $85 moisturizer made from hand-harvested sea kelp. Here are 23 of Sephora's top beauty products from September: