As a professional a really like this listener and I've been using it for about 18 years now. The results are quick and it lifts maximum level. (Some of those pre toned lighteners only lift 4-5 levels and while they work great for foiling in highlights I hate doing a whole head of dark hair with it) this is not a pre toned lightener so I recommend you have a toner or demi blonde hair color on hand for after the lightening process to get a beautiful blonde look. This will definitely take out the color though. When k use it on my self (level 6 hair) it goes to a level 10 yellow just like the inside of a banana peel that you hear people talking about when describing very lifted hair.