You bet. This is a big one and something we really care about. 9-free* nail polish means a nail lacquer is formulated without that extra stuff you may not want in your polish or on your nails. Our “9” refers to OPI Nature Strong being a Formaldehyde free nail polish, as well as it is without Formaldehyde Resin, Toluene, Xylene, Dibutyl phthalate (DBP), Camphor, Parabens, Ethyl Tosylamide, and Triphenyl Phosphate, and we intentionally chose not to include animal-derived ingredients towards our 9-free* count (which brought us to 10) because it’s a characteristic, not a chemical, but you can trust our Vegan Society certification that we are also free of animal-derived ingredients and that OPI Nature Strong is a cruelty-free nail polish. *US only.