"Organic," meaning grown without pesticides or other synthetic chemicals, is another term that's often misrepresented in the beauty industry. Look for the USDA Organic Seal, which denotes that the product is 95 to 100 percent organically produced.
Some of the best nail polish brands are now formulated without toluene, toxic dibutyl phthalate (DBP), formaldehyde, formaldehyde resin and camphor—all harsh chemicals. Zoya, Chanel, Deborah Lippmann and JINsoon, for example, are all 5-free.
zoya nail polish in dillon, rebel and brooklyn, $9 each, zoya.com
Parabans prevent the growth of bacteria in beauty products, but they can also pose health risks to the consumers—they've been linked to breast cancer and reproductive toxicity. Luckily, many brands have found effective alternatives.
In addition to using ingreidents that are good for us and the earth, there are so many brands (including those featured in this slideshow) that are also dedicated to practices that better the world, be it by using recyclable packaging or supporting environmental initiatives.
josie maran Model Citizen 100% Pure Argan Oil, $48, sephora.com