I ordered the sweet almond mint collection, despite having below bum length hair, and thinking it wouldn't last me five minutes. When I unpacked it, and - doh! - attempted to put the pump in the bottle, some of the contents came out, so I used that, and a little bit more when I did my hair. Next night, having put the pump in, I used THREE pumps on my hair IN TOTAL. Any more would have been overkill. After I again used the treatment spray. The only concern I do have, is my skin was feeling a little itchy, but I cannot say for certain the WEN caused that, until I've used it a few more times. Recommended usage for my length hair is, officially, 24 - 32 pumps, but Chaz also said up to 48 pumps. It doesn't lather, which I like and my hair is left feeling extremely soft and shiny and it is not as wet, after being towel dryed, possibly due to the lack of foam being absorbed by the hair when using regular shampoo. This range will work out cheaper for me, as I will only be using the cleanser, as opposed to a shampoo and a conditioner. I do wash my hair daily, so will use it every day but, as I am only using 3 pumps, that's no problem.
I just find it impossible to comprehend how I can manage on 3 pumps when the average for my hair length is 32. If I needed to use more, I would but, fundamentally, I don't. As long as I don't have a reaction to the product, I will definitely be trying the other varieties.
I would suggest to anyone thinking of buying from this range, try the amount of WEN you would normally use of your usual shampoo on your first wash. I only do one application. If that doesn't work for you, try using more. But chances are, you will find you don't need the recommended amount. You will have lost nothing by trying it, and may end up saving quite a bit of money.