If you have black hair or dark brown hair and you're aiming to go light blonde, I would suggest to use a different brand of bleach. DO NOT USE THIS! I have nothing but horrible experiences with this product. It not only damaged my hair, it also harmed my scalp and gave me all sorts of painful burns. It didn't lighten my hair as expected. It just turned it into a shade of light brown. This is the worst bleaching product I have ever used! It also gave me uneven colored patches, my hair is now a mess! I will not be purchasing this product again!