Sarah Lee and Christine Chang went on "Shark Tank" in 2015 to raise money for their curated K-beauty e-retailer, Glow Recipe. Since their appearance on the show, Glow Recipe released its best-selling Watermelon Glow Sleeping Mask, $45, which originally sold out in less than five hours. The overnight mask gets skin glowing, thanks to the watermelon extract, hyaluronic acid and alpha hydroxy acids in its formula. All you have to do is slather it on your face, hop into bed and let the mask get to work.

Sheet masks are all the rage but let's be real: It can be mighty tricky to keep them from slipping off your face. Enter a clever product line featured in a February 2018 "Shark Tank" episode: Dermovia's Lace Your Face Facial Mask, $15 each, which comes in brightening, calming and hydrating varieties, among others. What sets these sheet masks apart is that they hook onto your ears so they won't fall off.

Upper lip hair is a legit beauty concern but it's not always easy to find time to hit up a salon to have it waxed. The thing is, at-home waxing kits are hit or miss. But Jennifer Paschall (who owns a waxing salon in Los Angeles) and her business partner Gita Vasseghi created wax strips that actually work. The No Mo-Stache Portable Lip Waxing Kit, $18.99, comes with 24 strips and soothing aloe cream.

Talk about impressive: In 2013, recent high school grad Lani Lazzari appeared on "Shark Tank" and wowed billionaire Mark Cuban into investing in her line of all-natural scrubs. She now employs more than 20 people! Our top pick from her brand is the Simple Sugars Green Tea Facial, $19, which is gentle enough for everyday use and offers antioxidant protection.

TBH, we were kind of over natural deodorants — until we watched Jess Edelstein and Sarah Ribner extoll the virtues of their PiperWai Natural Deodorant, $14, on a 2015 episode. The natural, aluminum-free cream deo relies on activated charcoal to curb odor and absorb moisture. A natural deodorant that nixes smells and sweat? Sign us up.