I used lush and I think a whole block should be good for your hair. I would only use 1/4-1/2 a block for my BSL hair. Personally Lush gives nice color but little to no conditioning for my hair. I only noticed conditioning from henna when I used the powdered regular henna. Not to mention the Lush smells really badly compared to regular henna and it's ALOT of work to get it mixable.