12-free polish is formulated without 12 ingredients commonly flagged in conventional polish: formaldehyde, formaldehyde resin, toluene, DBP, camphor, xylene, ethyl tosylamide, triphenyl phosphate, parabens, fragrance, animal-derived ingredients and gluten. Nailberry, our hero brand for nail care, is 12-free and oxygen-permeable so water and air can still reach the nail.