Billie Eilish is proving that her beauty regimen is ironclad: On December 23, the singer posted her makeup routine on TikTok, showing fans all the things she uses to achieve her signature slick charm.

Irish first “set” her cowlick by spraying what looked like water in a spray bottle several times in the middle of her head, then pulled her hair into a ponytail. She also sprayed her bangs and tucked them behind her ears. Next, she applied Viva Los Angeles brand micellar water and moisturizer before starting on her makeup.

While the products she uses are great (we'll get to them soon), Eilish's makeup hacks are also really great to note. Before applying eyeliner, Eilish uses a Q-tip to dry the waterline. As makeup artist Megan Robinson says in one of Eilish's videos, “I'm not a big fan of waterproofing. 'If something is waterproof and [your eyes] are wet, the whole job of the pencil is to repel water. So it won't stick to the waterline. “Singer set the liner with eyeshadow, concealed some dark circles with concealer, added fake freckles, blush, highlighter, brow gel, and mascara. As a final touch, she lined her lips before setting them with powder and heading to the stage for her performance. After the show, EIlish recorded the show to show how her makeup held up. She wrote on the screen, “I ran around sweating for 95 minutes and everything looks decent.”

Not many people make a living performing in front of hundreds of thousands of people, but Eilish's makeup routine is surprisingly easy to transfer into her normal routine. If you're like me, you can simply swap your foundation for a concealer and finish off your eyebrows in a single stroke. If you have a busy life or are always in a hurry, this could be your new signature glam. Try all the products Eilish used to get this look, and be sure to give it a try.