This is most definitely the best purchase I've made for my hair in a very long time. The price did make me hesitate to start with, but they're all full size products and this actually works out a lot cheaper than buying individually. It comes with a little instruction booklet detailing the four steps, when to use each product, how long for, wet or dry hair etc. Which I found very useful. I have long, dry and damaged hair but after one use I noticed a huge difference. Most noticeably in the amount of shine my hair had, but also how soft it felt and was constantly running my fingers through it. Although it's a 4 step treatment I'll probably only follow that once or twice a month. Applying the oil does take some patience (especially on longer hair) and given my hair's length I think I'll probably only get 3 or 4 treatments out of the bottle meaning that is going to run out quicker than the rest of the pack. However I now use the shampoo once or twice a week for a nice (non stripping) clarifying wash, and the toner gets used every single time I wash my hair. I can't believe it's taken me this long to discover Philip B but I honestly don't think I've ever been so impressed by a haircare brand before.