Bat Outta Hell® AMPLIFIED™ 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!