Nail polishes free of formaldehyde, toluene and dibutyl phthalate (DBP) are the OG of non-toxic nail polishes, and it used to be the quality everyone hip to the green scene looked for in their bottles of lacquer. Now, though, it's hard to find a polish that isn't three-free. And with good reason: formaldehyde is a known carcinogen; toluene is found in gasoline and is a respiratory toxicant; and dibutyl phthalate, the chemical that makes plastic flexible, is listed as having potentially harmful reproductive effects by the Environmental Protection Agency. These are the three substances that pose the most risk to nail salon workers. Here are a few of our favorite three-free nail polishes.

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Iridescent island vibes are strong this Spring, and OPI is stepping up to the plate with this moody, "edge-of dawn" gray from their Fiji collection.

A brand spankin' new pop of pink from Essie's Spring 2017 lineup, this cheeky color was inspired by a spur-of-the-moment road trip down the coast.

An out-of-this-world intergalactic blue for the nail polish lover who is as deep as she is lively.

Add formaldehyde resin and camphor to the list of off-limit substances in five-free polishes. Many nail products that used to be three-free upgraded their status to exclude these two ingredients, both of which are allergens for some people. The Environmental Working Group's cosmetic database lists them between a moderate and low health risk, though, so upgrading is completely optional.

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