What volume you get if you do it right. You really have to let it sit for 2-3 minutes before rinsing it off, and I also massage it in for 1 minute. So important. I did exactly what it said on the bottle and had it in the conditioner too. It turned out a bit too good.
I have ordered their shampoo and conditioner, but haven't received them yet, so I'm testing with the shampoo I have at home, which is one you can buy at Maxi. And it worked super well. So I really don't think you need their products if you don't want to or can't afford to buy everything!
Totally worth trying!!!