Ever had a beauty product you love so much that you shook, hacked, scraped or squeezed its container until you were absolutely positive you had expended all of its precious contents? Rare indeed is the product that elicits that deliciously desperate feeling, especially in beauty editors. So when our team of beauty mavens encounters a rave-worthy product, you know it's the real deal. Herewith, our editors rattle off their "beauty empties," aka the best beauty products that they can't help but use until the last drop. Read on for their best nail polishes, hair products, skin care products and makeup now.