The shampoo has changed ingredients as well; They added argan oil I havnet tried it yet but will be soon.
The original was my staple. It has changed a little over the time that Ive used it for the past 5 years. Initially it was a little more cleansing. It became much more gentle over the last year or so but still cleaned nicely.
The tea tree shampoo works better for oily hair which my daughter has. Im going to stock pile the shampoo in the event they try me.