Makeup guru turned mogul Huda Kattan has more Instagram followers than Britney Spears and Madonna combined—and 15 times more than Pat McGrath. Videos like "How to Fake a Lip Job" on Kattan's YouTube channel command up to 3 million views. Her Huda Beauty false lashes are Sephora's best-selling brand in the Middle East.

We caught up with Kattan for a crash course in beauty—including the one product you need for airbrushed skin, the beauty treatment worth investing in, and the secret to super shiny hair. GET THE SCOOP.