GUILT-FREE GLAMOUR!®Bat Outta Hell® is a dark, espresso brown hair dye with warm undertones. This shade is here to stand out and be taken seriously! For best results use on pre-lightened hair or add to your current natural light brown hair for added pigment and intensity! All semipermanent hair dyes work best on pre-lightened hair. Always do a strand test to make sure this color will work well on your current base color! Not sure? Reach out to customerservice@manicpanic.com for any questions! Details: Style: Classic Semi-Permanent Hair Dye Color: Bat Outta Hell® Color Description - Dark Brown Hair Dye Volume: 4oz / 118ml Ingredients: Vegan Friendly, PPD Free! Additional Features: Benefits of Conditioning Hair, Resealable Tub For Longer Use, Comes With Instructions Duration: 4 - 6 weeks For Best Results: See Instructions Tab  Tested on celebrities, not animals™.