Kendall's must-have beauty product? Lip balm! Speaking to her fellow model Joan Smalls in an interview for Estee Lauder, the Keeping Up With The Kardashians star also revealed her top tip travel trip: pack moisturiser for the flight.
"I like to have my moisturizer with me because you get really dry on planes so it’s important to keep your skin hydrated," she explained. "Otherwise, I just need to feel refreshed and clean so I try to wash my face before I go to bed, and I use an eye cream."