Switching up my beauty routine and trying new products on a daily basis is pretty much written in my job description. So, when there's a holy-grail item that's so good and has become so irreplaceable in my regular makeup regimen that I've used it since college (ahem, I'll be 30 in May), you know it's unparalleled. 

ICYMI, Ulta's highly anticipated 21 Days of Beauty Event is on through April 1, and each day, a selection of beloved beauty items are slashed down to 50% off their normal price. So, when I saw that my all-time favorite liquid eyeliner was half-price today, I immediately let out an eep!, added about five to my Ulta cart, and also texted the group chat. My friends always ask me how I create my signature, subtle cat-eye, and the on-sale eyeliner in question—Stila's Stay All Day Waterproof Liquid Eye Liner—is my answer. Keep scrolling to shop it yourself and to peruse more discounted beauty offerings available at Ulta right now.