GUILT-FREE GLAMOUR!®Purple Haze is a warm, very dark purple hair dye that leaves purple tones on virgin, unbleached hair. For best results, we recommend lightening hair to medium level 7 blonde or lighter before use. How many 4oz containers of Manic Panic hair color should I buy? Short Hair up to Bob Length: 1 jar/bottle for thin or thick hair. Below the Shoulder up to Waist Length: 2 jars/bottles for thin hair and 2-3 for thick hair. Tailbone or Longer: 3 or more jars for thin or thick hair. Details: Style: Classic Semi-Permanent Hair Dye Color: Purple Haze Color Description -  Warm Dark Purple 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™.   Fun fact: This shade is named after a legendary Jimi Hendrix song! Another fun fact: For the Met Ball in 2014, celebrity stylist Ted Gibson used this dye to tint the locks of Oscar-winner Lupita Nyong’o.