10 Top-Selling Travel Items and Sets You Can Get at Sephora — Under $28

What it is: Becca Glow on the Go Highlighter Set ($20)

Why you need it: This lets you try two different formulas of the superpopular highlighters in Opal, a golden shade. The liquid highlighter can be mixed in with foundation for an all-over glow or applied to cheekbones alone. Add a layer of the Pressed Perfector on top for a moonbeam effect.