Crazy Color Semi Permanent Hair Dye Color 079 Toxic UV 150ML 5.07 oz Toxic UV Don't you know that you're TOXIC 5035832018874 It's NEON - Introducing TOXIC UV, This ultra glowing green is not for the faint-hearted. Make em' stop and stare, with a shade that pop's in both natural and blacklight. For best results apply to pale or platinum blonde hair. Lasts between 3-9 weeks on bleached hair, depending on the shade chosen. Hair color will add energy and shine to natural hair or glowing colors on light bleached hair. The more porous the hair, the more vibrant and longer-lasting the color will be. For exotic, vibrant colors, bleach hair to the light yellow stage and apply crazy color cream without the addition of any other substances. Comes in outer box containing 4 x 3.3oz bottles. Lasts between 3-9 weeks on bleached hair, depending on the shade chosen. Hair color will add energy and shine to natural hair or glowing colors on light bleached hair. The more porous the hair, the more vibrant and longer-lasting the color will be. For exotic, vibrant colors, bleach hair to the light yellow stage and apply crazy color cream without the addition of any other substances. Comes in outer box containing 4 x 3.3oz bottles.