This is the €14 mascara that Beyoncé wore during her iconic Coachella performance

We've got to admit it, we're still not over Beyoncé's performance at Coachella.

The (understandably) much-hyped performance blew everyone away on Saturday night, with people soon renaming the festival #Beychella in her honour. And amid all the talking about Beyoncé making Coachella history on the night, the mini-Destiny's Child reunion, and just  the all-around epic-ness, people began to wonder... HOW did her makeup stay so flawless throughout the whole set? Sir John, Queen B's longtime makeup artist, spilled the secrets on which products he used for her memorable performance. He told Refinery 29 that Beyoncé was keen to look "young, fresh and like she wasn't trying too hard" - and that her look was inspired by a college girl being on campus. Sir John also shared the products that he used to create Bey's iridescent eye look - and, as it turns out, a €14 mascara played a huge part in finishing it off. He started out the look with a mixture of "a few different glitters", including beginning with a terracotta base, a glittery purple and then glitter in the middle of the eye. He used MAC's Brownborder eyeliner on the bottom and a black liner on the top, and topped it all off with the Lash Paradise mascara by L'Oréal. Hey, if it's good enough for Queen Bey...don't mind us, we're just going to head out to snap up a tube or two (or three). He also explained the trick to making makeup really last - and it turns out it's all about layering. He continued:

"It's basically like keeping your makeup on through two hours of cardio. "Layering is the key, so you want to use a liquid foundation, then set it with bronzer; a cream blush, then set it with powder blush; eyeliner, then set it with shadow. "No matter what part of the face, it has a double application."