We love everything that is eco-friendly. Now Eco-friendly nail polishes are becoming very popular.Check out  Acquarella polishes which are water based, odorless and require no basecoat or topcoat. It contains no formaldehyde, phthalates or chemical solvents of any kind. In fact, the formula is so simple you can add a few drops of distilled water to thin it out. Acquarella.com or Amazon.com, $16.