I have used this shampoo and conditioner for over a year and have been super satisfied. On the latest bottle I bought, it says "New improved formula" and it is much worse. It doesn't smell nearly as good and my hair doesn't feel clean. Right after my hair dries, it feels greasy and sticky, like the feeling after I've used dry shampoo. It feels like there's shampoo or conditioner left in my hair that doesn't rinse out, even though I've rinsed very thoroughly. The first time it happened, when I had just opened the new bottles, I thought I just missed rinsing properly. But it has happened four showers in a row now and I have been very careful to rinse after. It's sad that they have to change such a good product.
I just experienced the same thing when I bought the product last time. I saw that one of the main ingredients in the new formula is glycerin, and I have experienced the same thing with other products that contain glycerin.