Jack Black True Volume Thickening Shampoo lathers very well and you only need about a quarter size amount to shampoo your hair unless you have really long hair then you'll need to use a little more.  It is a smooth shampoo much like what the salons use.  It leaves your hair and scalp so clean.  I have used it several times now and the flakiness is getting less and less.  This True Volume  Thickening shampoo with Expansion Technology puts Creatine and Wheat Protein in your hair shaft to thicken each strand of hair.  It also has Basil and Lupine in it to keep your hair healthy.  It is organic and has no fragrance.  It is for all hair types and even for color treated hair.  I really like this shampoo because it has helped to keep my head from itching so much as well as cut down on the flakiness. My husband really likes this shampoo too. I am ordering the conditioner to go with it.  I highly recommend the Jack Black Shampoo!