Clairol Nice 'n Easy Frost & Tip Original Hair Highlighting Kit

I've used this brand for years, it's very good and reliable. One box lasts me a very long time as I don't mix the whole thing at once. I have used it so much I am familiar with what the consistency of the mix should be now that I just mix a little of the liquid with the powder until I get the right mix and then I close up the powder packet and the bottle and save it for next time. I buy a whole bunch of "caps" at sally's beauty supply because they only include one cap in the box. In this way one box will last me through at least 6 or 7 highlights. I only do the crown of my head. If you are doing your whole head or doing the foil method you will go through a box much faster than I do. I leave it on for the full 90 minutes. That is the longest time they recommend doing. I always have good results.