The beauty world can be fickle. At any given moment, a specific treatment could be touted as miraculous (Morpheus8!) and simultaneously vilified for being disastrous (also Morpheus8!). And while some of us simply choose a trusted expert and just follow their lead, most of us have outside forces that influence our aesthetic decisions. Right now, perennial beauty insiders (Lady Gaga's makeup artist Sarah Tanno and MAC's global creative director Nicola Formichetti) and LA It girls (actress Dree ...