Review (5/5): Worth it. Easy to use. See the result right away.
Definitely love this product, the primer act as like bleach does help with my darkest hair color. Although my hair is pretty black I left it on more than 30 mins it's recommend. I don't feel too much tingly at all. It does help bleach my black hear but not too an extend like at the salon. But it bleach enough where your hair does not feel damaged. When my root grow out much more I Definitely will repurchase. I have to use 2 bottles of primer though. Even though I used 2 primer boxes, however my hair does not feel damaged at all.