I bought the Kirkland shampoo in bulk at Costco, and since there was also a conditioner next to it, I decided to get that too. After using this, my hair becomes incredibly smooth and shiny. It really seems to fulfill the role of a conditioner effectively. Moreover, when you consider the volume and the price, it's quite a good deal!
I don't think I've ever been disappointed using this. The only thing was that at first, the pump was hard to press down, and I was really flustered, but that could just be because I'm not very good at it haha