There are two types of polish-lovers: the ladies who keep a few colors for their weekly mani-pedi appointment and the women who might as well have stock in OPI because nail polish is taking over the bathroom closet. We admit we're somewhere close to the extreme side of that spectrum. While we'll never give up our Essie Ballet Slippers, we're currently craving niche lacquer colors that even our fellow nail junkies won't recognize. These boutique brands fit that bill. And it's not just the shades we adore; the majority of these companies hold high environmental standards, meaning the polish is acceptable for vegans, expectant moms, the gluten sensitive, PETA participants, and kids.