naturtint permanent hair color 3n dark chestnut brown (pack of 6), ammonia free, vegan, cruelty free, up to 100% gray coverage, long lasting results naturtint naturtint permanent hair color is the first permanent hair color certified by the usda biopreferred program, exceeding minimum usda certified biobased content for hair styling products by using less petroleum-derived and more naturally derived substitutes. the same amazing colors you love, but now with a 100% naturally derived propylene glycol alternative. everything you need to color is included in each kit, and now with the all-new 1.69-fluid ounce tube of the naturtint quinoa multi-care mask proven to nourish and help increase color retention by up to 20%! created by an independently owned, woman-run company in madrid, spain, naturtint has been the leader in scientifically innovative hair color and cleaner hair care for over 25 years. naturtint’s botanical-inspired formulas contain only the highest quality ingredients and are designed to deliver and maintain radiant color and shine.