So this Rimmel Scandal'Eyes mascara in black is seriously a game-changer for your lashes. What I love about it is you can totally customize how dramatic you want to go – keep it light and natural for everyday, or layer it on thick for a night out. Plus, it's waterproof and actually stays put for like 24 hours without getting all flaky and gross.The formula's got conditioning stuff in it too, so your lashes don't feel crunchy or weird, and you can add more coats throughout the day if you need to. The brush is shaped kinda like a peanut which sounds random but it actually gets into every tiny lash – no clumps or missed spots. And if you've got sensitive eyes, you're good to go since it's been tested by eye doctors and dermatologists.How to use it: Just swipe the thicker part of the brush through your lashes from bottom to top. Want more volume? Just keep adding layers. Pro tip – if you line your eyes with their Scandalayes waterproof eyeliner first, your whole look comes together really nicely.