Ok, maybe it’s cliched, but we all have that one product that we would cling to on a desert island for dear life (too bad, it can’t just be Matthew Fox!). For me, I haven’t left my home without my timeBalm concealer on since the day I discovered it. My years of embarassment over my hereditary dark circles vanished in a swoop of magical coverage. Now, we want to know what your life-changing product is! Tell us: What’s your one must-have beauty essential that gets you raving? And why do you love it so much?