MANIC PANIC Classic Siren's Song Semi Permanent Hair Color - Neon Blue-Green Hair Dye for Women & Men That Lasts 4-6 Weeks - Vegan, Ammonia & Cruelty-Free - Create & Mix Custom Shades (4oz)

Sirens Song Hair Dye Color; A Bluegreen Hair Dye That Glows Under Blacklight; For Best Results We Recommend Applying To Hair That Has Been Pre Lightened To The Lightest Level Ten Blonde, Mixable Colors And Tones; MANIC PANIC Hair Colors Are Safe To Mix To Create Custom Shades Making The Possibilities Of Shades Endless; Combine Any Formula With The Pastelizer To Create Soft Trendy Pastel Hues; Ready To Use No Developer Required, Semi Permanent Hair Dye; Formula Gradually Fades In Four To Six Weeks Because It Does Not Penetrate The Cortex Of Your Hair But Simply Rests On Top Of The Hair Shaft, Cruelty Free And Vegan Formula; This Color Cream Hair Dye Features Vegan Ingredients Tested On Celebrities Not Animals; Hair Color Is Ammonia Free Paraben Free Gluten Free Resorcinol Free Phthalate Free And Peta Accredited, For Best Results; Vibrant Color Results Are Best Achieved By Applying To Hair That Has Been Pre Lightened With MANIC PANIC Flash Lightning Bleach Kits; Bleaching Thoroughly To A Level Nine Or Ten Before Dyeing Is Recommended For The Best Results