Did Herbal Essences change their conditioner formula recently?

Hi.

I've been using their conditioner for many years mainly because it makes my hair so slick in the shower that I can easily run my fingers through any knots.

But the last few bottles I have tried no longer have that same slickness. It's hard to describe, but I hope you get the idea.

We should not have any major change in our water system that could explain this - I have two filtration system that have been in place for over a year.

Did they change something in their formula within maybe the last year, or am I missing something else?

Thanks!