MILEY is a firm believer that you can have the best of both worlds, especially when it comes to makeup. The pop star revealed that an affordable $7 lip balm is her beauty secret to the perfect pout while balling on a budget. The "Flowers" singer applied the ITK, or "In the Know," lip balm in a behind-the-scenes shot from a Gucci photoshoot, which immediately sparked fan intrigue.

The ITK Nourishing Balm is formulated with shea butter, coconut oil, cocoa seed butter, and vitamin E to hydrate and repair dry and cracked lips. In an Instagram photo , Miley applied the balm over her lipstick as she prepared for her Gucci shoot. The balm has a glossy finish, layered well over her lipstick without ruining the layer underneath.

Read More on Celeb Beauty Almost as if unveiling a hack, Miley upped the sheen of her matte lipstick without much effort. Fans moved quickly to identify the purple tube after Miley's endorsement, and unsurprisingly, soon after, the lip balm flew off the shelves. Eager shoppers cleaned retailers like Walmart of its stock, but the lip balm is still available on Amazon.

Beauty fans who've tried it for themselves attested to the balm's hydrating power. Most read in Hair & Beauty One said they switched from the cult-favorite Aquaphor lip balm and haven't looked back. "I'm a ride-or-die Aquaphor girly, but I find myself reaching for this over the Aquaphor now," she said.

"The thickness is perfect and not sticky. Also love that it's unscented. "It's the perfect night.