Review (4/5): Great color but allergy alert!
Pros: Beautiful, vibrant color, pleasant fragrance, and easy to use. Cruelty free and vegan friendly. I used this in a rainbow hair look (see pic). Cons: minus one star because all of their dyes contain Methylchloroisothiazolinone and Methylisothiazolinone, which are added as an antimicrobial/anti-fungal. These are known to be common allergens and repeated and/or extended exposure can increase risk of reaction. Imagine the feeling of sunburned poison ivy on your scalp. I am personally VERY allergic to this chemical, so I can never use these dyes on myself :'(