Perfume often feels like a last-minute luxe add-on to our beauty routine—one that hasn’t changed much for generations. But a recent trend is shaking up the traditional spritz-before-running-out-the-door method: perfume oil. Applied with a dropper or rollerball, it melts into your skin and lasts so much longer because the ingredients are more concentrated. It’s our new favorite way to wear our signature scent. Click through for six classic fragrances now available in this form.